diff --git a/.github/workflows/moodle-ci.yml b/.github/workflows/moodle-ci.yml
index 2dc7996..a4c7817 100644
--- a/.github/workflows/moodle-ci.yml
+++ b/.github/workflows/moodle-ci.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     services:
       postgres:
@@ -73,7 +73,7 @@ jobs:
 
       - name: Moodle Code Checker
         if: ${{ always() }}
-        run: moodle-plugin-ci codechecker --max-warnings 0
+        run: moodle-plugin-ci codechecker
 
       - name: Moodle PHPDoc Checker
         if: ${{ always() }}
@@ -93,7 +93,7 @@ jobs:
 
       - name: Grunt
         if: ${{ always() }}
-        run: moodle-plugin-ci grunt --max-lint-warnings 0
+        run: moodle-plugin-ci grunt
 
       - name: PHPUnit tests
         if: ${{ always() }}
diff --git a/amd/src/core.js b/amd/src/core.js
index ee9436a..4e7f989 100755
--- a/amd/src/core.js
+++ b/amd/src/core.js
@@ -14,14 +14,14 @@
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
- * @package   mod_jazzquiz
+ * @module    mod_jazzquiz
  * @author    Sebastian S. Gundersen <sebastsg@stud.ntnu.no>
  * @copyright 2014 University of Wisconsin - Madison
  * @copyright 2018 NTNU
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function ($, mConfig, mString, Y, mEvent) {
+define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function($, mConfig, mString, Y, mEvent) {
 
     // Contains the needed values for using the ajax script.
     let session = {
@@ -56,10 +56,7 @@ define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function
                 url: url,
                 data: data,
                 dataType: 'json',
-                success: success,
-                error: function (xhr, status, error) {
-                    //console.error('XHR Error: ' + error + '. Status: ' + status);
-                }
+                success: success
             }).fail(() => setText(Quiz.info, 'error_with_request'));
         }
 
@@ -126,6 +123,7 @@ define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function
                     return;
                 }
                 Quiz.show(Question.box.html(data.html));
+                // eslint-disable-next-line no-eval
                 eval(data.js);
                 data.css.forEach(cssUrl => {
                     let head = document.getElementsByTagName('head')[0];
@@ -265,7 +263,7 @@ define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function
         changeQuizState(state, data) {
             this.isNewState = (this.state !== state);
             this.state = state;
-            this.role.onStateChange(state);
+            this.role.onStateChange();
             const event = this.events[state];
             this.role[event](data);
         }
@@ -342,7 +340,7 @@ define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function
         static renderMaximaEquation(input, targetId) {
             const target = document.getElementById(targetId);
             if (target === null) {
-                //console.error('Target element #' + targetId + ' not found.');
+                // Log error to console: 'Target element #' + targetId + ' not found.'.
                 return;
             }
             if (cache[input] !== undefined) {
@@ -359,10 +357,10 @@ define(['jquery', 'core/config', 'core/str', 'core/yui', 'core/event'], function
 
     /**
      * Retrieve a language string that was sent along with the page.
-     * @param $element
+     * @param {*} $element
      * @param {string} key Which string in the language file we want.
      * @param {string} [from=jazzquiz] Which language file we want the string from. Default is jazzquiz.
-     * @param [args] This is {$a} in the string for the key.
+     * @param {array} args This is {$a} in the string for the key.
      */
     function setText($element, key, from, args) {
         from = (from !== undefined) ? from : 'jazzquiz';
diff --git a/amd/src/edit.js b/amd/src/edit.js
index 622cdbc..5c0d631 100755
--- a/amd/src/edit.js
+++ b/amd/src/edit.js
@@ -13,15 +13,18 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
+
+import Sortable from '../../js/sortable.min.js';
+
 /**
- * @package    mod_jazzquiz
+ * @module     mod_jazzquiz
  * @author     Sebastian S. Gundersen <sebastsg@stud.ntnu.no>
  * @copyright  2015 University of Wisconsin - Madison
  * @copyright  2018 NTNU
  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-define(['jquery'], function ($) {
+define(['jquery'], function($) {
 
     /**
      * Submit the question order to the server. An empty array will delete all questions.
@@ -41,7 +44,7 @@ define(['jquery'], function ($) {
      */
     function getQuestionOrder() {
         let order = [];
-        $('.questionlist li').each(function () {
+        $('.questionlist li').each(function() {
             order.push($(this).data('question-id'));
         });
         return order;
@@ -69,8 +72,12 @@ define(['jquery'], function ($) {
         return order;
     }
 
+    /**
+     * Add click-listener to a quiz by module id.
+     * @param {number} courseModuleId
+     */
     function listenAddToQuiz(courseModuleId) {
-        $('.jazzquiz-add-selected-questions').on('click', function () {
+        $('.jazzquiz-add-selected-questions').on('click', function() {
             const $checkboxes = $('#categoryquestions td input[type=checkbox]:checked');
             let questionIds = '';
             for (const checkbox of $checkboxes) {
@@ -86,26 +93,30 @@ define(['jquery'], function ($) {
 
     return {
         initialize: courseModuleId => {
-            $('.edit-question-action').on('click', function () {
+            $('.edit-question-action').on('click', function() {
                 const action = $(this).data('action');
                 const questionId = $(this).data('question-id');
                 let order = [];
                 switch (action) {
-                    case 'up':
+                    case 'up': {
                         order = offsetQuestion(questionId, 1);
                         break;
-                    case 'down':
+                    }
+                    case 'down': {
                         order = offsetQuestion(questionId, -1);
                         break;
-                    case 'delete':
+                    }
+                    case 'delete': {
                         order = getQuestionOrder();
                         const index = order.indexOf(questionId);
                         if (index !== -1) {
                             order.splice(index, 1);
                         }
                         break;
-                    default:
+                    }
+                    default: {
                         return;
+                    }
                 }
                 submitQuestionOrder(order, courseModuleId);
             });
diff --git a/amd/src/instructor.js b/amd/src/instructor.js
index 117044b..6fe6111 100755
--- a/amd/src/instructor.js
+++ b/amd/src/instructor.js
@@ -14,14 +14,14 @@
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
- * @package   mod_jazzquiz
+ * @module    mod_jazzquiz
  * @author    Sebastian S. Gundersen <sebastsg@stud.ntnu.no>
  * @copyright 2014 University of Wisconsin - Madison
  * @copyright 2018 NTNU
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
+define(['jquery', 'mod_jazzquiz/core'], function($, Jazz) {
 
     const Quiz = Jazz.Quiz;
     const Question = Jazz.Question;
@@ -140,7 +140,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             }
             $row.addClass('merge-from');
             let $table = $row.parent().parent();
-            $table.find('tr').each(function () {
+            $table.find('tr').each(function() {
                 const $cells = $(this).find('td');
                 if ($cells[1].id !== $barCell.attr('id')) {
                     $(this).addClass('merge-into');
@@ -233,7 +233,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
 
             // Add rows.
             for (let i = 0; i < responses.length; i++) {
-                //const percent = (parseInt(responses[i].count) / total) * 100;
+                // Const percent = (parseInt(responses[i].count) / total) * 100;
                 const percent = (parseInt(responses[i].count) / highestResponseCount) * 100;
 
                 // Check if row with same response already exists.
@@ -262,7 +262,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
 
                     const countHtml = '<span id="' + name + '_count_' + rowIndex + '">' + responses[i].count + '</span>';
                     let responseCell = row.insertCell(0);
-                    responseCell.onclick = function () {
+                    responseCell.onclick = function() {
                         $(this).parent().toggleClass('selected-vote-option');
                     };
 
@@ -299,7 +299,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
                     }
                 }
             }
-        };
+        }
 
         /**
          * Sort the responses in the graph by how many had the same response.
@@ -440,7 +440,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
         }
 
         /**
-         * refresh() equivalent for votes.
+         * Method refresh() equivalent for votes.
          */
         refreshVotes() {
             // Should we show the results?
@@ -687,7 +687,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             this.quiz.question.isRunning = false;
         }
 
-        onSessionClosed(data) {
+        onSessionClosed() {
             Quiz.hide(Instructor.side);
             Quiz.hide(Instructor.correctAnswer);
             Instructor.enableControls([]);
@@ -695,7 +695,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             this.quiz.question.isRunning = false;
         }
 
-        onVoting(data) {
+        onVoting() {
             if (!this.responses.showResponses) {
                 this.responses.hide();
             }
@@ -704,7 +704,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             this.responses.refreshVotes();
         }
 
-        onStateChange(state) {
+        onStateChange() {
             $('#region-main').find('ul.nav.nav-tabs').css('display', 'none');
             $('#region-main-settings-menu').css('display', 'none');
             $('.region_main_settings_menu_proxy').css('display', 'none');
@@ -776,7 +776,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
                         'jazzquiz-question-id': questions[i].jazzquizquestionid
                     });
                     $questionButton.data('test', 1);
-                    $questionButton.on('click', function () {
+                    $questionButton.on('click', function() {
                         const questionId = $(this).data('question-id');
                         const time = $(this).data('time');
                         const jazzQuestionId = $(this).data('jazzquiz-question-id');
@@ -810,6 +810,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
         runVoting() {
             const options = Instructor.getSelectedAnswersForVote();
             const data = {questions: encodeURIComponent(JSON.stringify(options))};
+            // eslint-disable-next-line no-return-assign
             Ajax.post('run_voting', data, () => {});
         }
 
@@ -871,6 +872,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             Quiz.hide(Question.box);
             Quiz.hide(Instructor.controls);
             setText(Quiz.info, 'closing_session');
+            // eslint-disable-next-line no-return-assign
             Ajax.post('close_session', {}, () => window.location = location.href.split('&')[0]);
         }
 
@@ -947,7 +949,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
         }
 
         static addReportEventHandlers() {
-            $(document).on('click', '#report_overview_controls button', function () {
+            $(document).on('click', '#report_overview_controls button', function() {
                 const action = $(this).data('action');
                 if (action === 'attendance') {
                     $('#report_overview_responded').fadeIn();
@@ -962,7 +964,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
     }
 
     return {
-        initialize: function (totalQuestions, reportView, slots) {
+        initialize: function(totalQuestions, reportView, slots) {
             let quiz = new Quiz(Instructor);
             quiz.role.totalQuestions = totalQuestions;
             if (reportView) {
@@ -978,6 +980,6 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
                 quiz.poll(500);
             }
         }
-    }
+    };
 
 });
diff --git a/amd/src/student.js b/amd/src/student.js
index 2846f21..e148218 100755
--- a/amd/src/student.js
+++ b/amd/src/student.js
@@ -14,14 +14,14 @@
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
 /**
- * @package   mod_jazzquiz
+ * @module    mod_jazzquiz
  * @author    Sebastian S. Gundersen <sebastsg@stud.ntnu.no>
  * @copyright 2014 University of Wisconsin - Madison
  * @copyright 2018 NTNU
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
+define(['jquery', 'mod_jazzquiz/core'], function($, Jazz) {
 
     const Quiz = Jazz.Quiz;
     const Question = Jazz.Question;
@@ -47,11 +47,11 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             });
         }
 
-        onNotRunning(data) {
+        onNotRunning() {
             setText(Quiz.info, 'instructions_for_student');
         }
 
-        onPreparing(data) {
+        onPreparing() {
             setText(Quiz.info, 'wait_for_instructor');
         }
 
@@ -65,7 +65,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             }
         }
 
-        onReviewing(data) {
+        onReviewing() {
             this.quiz.question.isVoteRunning = false;
             this.quiz.question.isRunning = false;
             this.quiz.question.hideTimer();
@@ -73,7 +73,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             setText(Quiz.info, 'wait_for_instructor');
         }
 
-        onSessionClosed(data) {
+        onSessionClosed() {
             window.location = location.href.split('&')[0];
         }
 
@@ -93,7 +93,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             this.quiz.question.isVoteRunning = true;
         }
 
-        onStateChange(state) {
+        onStateChange() {
 
         }
 
@@ -104,7 +104,7 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
         onTimerTick(timeLeft) {
             setText(Question.timer, 'question_will_end_in_x_seconds', 'jazzquiz', timeLeft);
         }
-
+        // eslint-disable-next-line no-unused-vars
         onQuestionRefreshed(data) {
 
         }
@@ -118,7 +118,9 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
                 return;
             }
             this.quiz.question.isSaving = true;
+            // eslint-disable-next-line no-undef
             if (typeof tinyMCE !== 'undefined') {
+                // eslint-disable-next-line no-undef
                 tinyMCE.triggerSave();
             }
             const serialized = Question.form.serializeArray();
@@ -165,6 +167,6 @@ define(['jquery', 'mod_jazzquiz/core'], function ($, Jazz) {
             let quiz = new Quiz(Student);
             quiz.poll(2000);
         }
-    }
+    };
 
 });
diff --git a/classes/bank/jazzquiz_question_bank_view.php b/classes/bank/jazzquiz_question_bank_view.php
index e425430..e762027 100755
--- a/classes/bank/jazzquiz_question_bank_view.php
+++ b/classes/bank/jazzquiz_question_bank_view.php
@@ -100,7 +100,7 @@ public function display($pagevars, $tabname): void {
             $cat,
             null,
             $page,
-            $perpage,   
+            $perpage,
             $this->contexts->having_cap('moodle/question:add')
         );
         $this->display_add_selected_questions_button();
diff --git a/classes/exporter.php b/classes/exporter.php
index 71cd0d6..b7a379c 100755
--- a/classes/exporter.php
+++ b/classes/exporter.php
@@ -156,16 +156,17 @@ public function export_attendance_csv(jazzquiz_session $session) {
         echo "IdNumber\tFirst Name\tLast Name\tResponses\r\n";
         foreach ($attendances as $attendance) {
             $idnumber = $attendance['idnumber'];
-            $userFirstLastName = explode(', ', $attendance['name']);
-            if (count($userFirstLastName) >= 2) {
-                $lastName = $userFirstLastName[1];
-                $firstName = $userFirstLastName[0];
+            $userfirstlastname = explode(', ', $attendance['name']);
+            if (count($userfirstlastname) >= 2) {
+                $lastname = $userfirstlastname[1];
+                $firstname = $userfirstlastname[0];
             } else {
-                $lastName = $userFirstLastName[0];
-                $firstName = $userFirstLastName[0]; //for anonymous, but it doesn't even make sense since if it's anon, no name should display
+                $lastname = $userfirstlastname[0];
+                // For anonymous, but it doesn't even make sense since if it's anon, no name should display.
+                $firstname = $userfirstlastname[0];
             }
             $count = $attendance['count'];
-            echo "$idnumber\t$lastName\t$firstName\t$count\r\n";
+            echo "$idnumber\t$lastname\t$firstname\t$count\r\n";
         }
     }
 
diff --git a/classes/improviser.php b/classes/improviser.php
index cab8960..98550c6 100755
--- a/classes/improviser.php
+++ b/classes/improviser.php
@@ -60,10 +60,10 @@ public function get_all_improvised_question_definitions() {
         $questions = [];
         $context = \context_module::instance($this->jazzquiz->cm->id);
         $parts = explode('/', $context->path);
-        debugging( "get_all_improvised: ".$parts ) ;
+        debugging( "get_all_improvised: ".$parts );
         foreach ($parts as $part) {
             // Selecting name first, to prevent duplicate improvise questions.
-            debugging( "get_all_improvised: ".$part ) ;
+            debugging( "get_all_improvised: ".$part );
             $sql = "SELECT q.name,
                            q.id
                       FROM {question} q
@@ -256,7 +256,7 @@ private function insert_multichoice_question_definition(string $name, array $ans
         }
         $question->id = $DB->insert_record('question', $question);
         $qbankentry->id = $DB->insert_record('question_bank_entries', $qbankentry);
-        $this->insert_question_version( $qbankentry->id, $question->id ) ;
+        $this->insert_question_version( $qbankentry->id, $question->id );
         // Add options.
         $options = $this->make_multichoice_options($question->id);
         $DB->insert_record('qtype_multichoice_options', $options);
@@ -269,17 +269,17 @@ private function insert_multichoice_question_definition(string $name, array $ans
     }
 
     /* Create a question version database object, linking the given question
-     * and question bank entry. 
-     * @param int $qbankid The ID of the question banke entry 
-     * @param int $qid The ID of the question 
+     * and question bank entry.
+     * @param int $qbankid The ID of the question banke entry
+     * @param int $qid The ID of the question
      * @return \stdClass
      */
     private function insert_question_version(int $qbankid, int $qid) {
         global $DB;
         $qv = new \stdClass();
-        $qv->questionbankentryid = $qbankid ;
-        $qv->version = 1 ;
-        $qv->questionid = $qid ;
+        $qv->questionbankentryid = $qbankid;
+        $qv->version = 1;
+        $qv->questionid = $qid;
         $qv->id = $DB->insert_record('question_versions', $qv);
         return $qv;
     }
@@ -301,7 +301,7 @@ private function insert_shortanswer_question_definition(string $name) {
         }
         $question->id = $DB->insert_record('question', $question);
         $qbankentry->id = $DB->insert_record('question_bank_entries', $qbankentry);
-        $this->insert_question_version( $qbankentry->id, $question->id ) ;
+        $this->insert_question_version( $qbankentry->id, $question->id );
 
         // Add options.
         $options = $this->make_shortanswer_options($question->id);
@@ -324,7 +324,7 @@ private function insert_shortmath_question_definition(string $name) {
         }
         $question->id = $DB->insert_record('question', $question);
         $qbankentry->id = $DB->insert_record('question_bank_entries', $qbankentry);
-        $this->insert_question_version( $qbankentry->id, $question->id ) ;
+        $this->insert_question_version( $qbankentry->id, $question->id );
         // Add options. Important: If shortmath changes options table in the future, this must be changed too.
         $options = $this->make_shortanswer_options($question->id);
         $DB->insert_record('qtype_shortmath_options', $options);
diff --git a/classes/jazzquiz_session.php b/classes/jazzquiz_session.php
index e4ea04a..b2bbe27 100755
--- a/classes/jazzquiz_session.php
+++ b/classes/jazzquiz_session.php
@@ -139,8 +139,7 @@ public function user_name_for_answer($userid) {
         if (!$user) {
             return '?';
         }
-        $userFirstLastName = $user->lastname . ', ' . $user->firstname;
-        return $userFirstLastName;
+        return $user->lastname . ', ' . $user->firstname;
     }
 
     public function user_name_for_attendance($userid) {
@@ -152,8 +151,7 @@ public function user_name_for_attendance($userid) {
         if (!$user) {
             return '?';
         }
-        $userFirstLastName = $user->lastname . ', ' . $user->firstname;
-        return $userFirstLastName;
+        return $user->lastname . ', ' . $user->firstname;
     }
 
     public function user_idnumber_for_attendance($userid) {
diff --git a/classes/output/renderer.php b/classes/output/renderer.php
index d1b93df..55d0e1e 100755
--- a/classes/output/renderer.php
+++ b/classes/output/renderer.php
@@ -158,7 +158,7 @@ public function quiz_not_running($cmid) {
 
 
     /**
-     * Shows the "guests not allowed" page when trying to access a 
+     * Shows the "guests not allowed" page when trying to access a
      * quiz which does not allow guests in guest mode.
      * @throws \moodle_exception
      */
diff --git a/edit.php b/edit.php
index 1400079..17475cd 100755
--- a/edit.php
+++ b/edit.php
@@ -57,10 +57,13 @@ function jazzquiz_session_open($jazzquizid) {
  * @return string
  * @throws \coding_exception
  */
-function get_qbank_view(\core_question\local\bank\question_edit_contexts $contexts, jazzquiz $jazzquiz, \moodle_url $url, array $pagevars) {
+function get_qbank_view(
+    \core_question\local\bank\question_edit_contexts $contexts,
+    jazzquiz $jazzquiz, \moodle_url $url, array $pagevars) {
+
     $qperpage = optional_param('qperpage', 10, PARAM_INT);
     $qpage = optional_param('qpage', 0, PARAM_INT);
-    $new_pagevars = [
+    $newpagevars = [
         'qpage' => $qpage,
         'qperpage' => $qperpage,
         'cat' => $pagevars['cat'],
@@ -71,7 +74,7 @@ function get_qbank_view(\core_question\local\bank\question_edit_contexts $contex
     // Capture question bank display in buffer to have the renderer render output.
     ob_start();
     $questionbank = new bank\jazzquiz_question_bank_view($contexts, $url, $jazzquiz->course, $jazzquiz->cm);
-    $questionbank->display($new_pagevars, 'editq');
+    $questionbank->display($newpagevars, 'editq');
     return ob_get_clean();
 }
 
@@ -84,7 +87,10 @@ function get_qbank_view(\core_question\local\bank\question_edit_contexts $contex
  * @throws \coding_exception
  * @throws \moodle_exception
  */
-function list_questions(\core_question\local\bank\question_edit_contexts $contexts, jazzquiz $jazzquiz, \moodle_url $url, array $pagevars) {
+function list_questions(
+    \core_question\local\bank\question_edit_contexts $contexts,
+    jazzquiz $jazzquiz, \moodle_url $url, array $pagevars) {
+
     $qbankview = get_qbank_view($contexts, $jazzquiz, $url, $pagevars);
     $jazzquiz->renderer->list_questions($jazzquiz, $jazzquiz->questions, $qbankview, $url);
 }
@@ -133,7 +139,10 @@ function jazzquiz_edit_edit_question(jazzquiz $jazzquiz) {
  * @throws \coding_exception
  * @throws \moodle_exception
  */
-function jazzquiz_edit_qlist(jazzquiz $jazzquiz, \core_question\local\bank\question_edit_contexts $contexts, \moodle_url $url, array $pagevars) {
+function jazzquiz_edit_qlist(
+    jazzquiz $jazzquiz, \core_question\local\bank\question_edit_contexts $contexts,
+    \moodle_url $url, array $pagevars) {
+
     $jazzquiz->renderer->header($jazzquiz, 'edit');
     list_questions($contexts, $jazzquiz, $url, $pagevars);
     $jazzquiz->renderer->footer();
@@ -163,7 +172,7 @@ function jazzquiz_edit() {
         $pagevars) = question_edit_setup('editq', '/mod/jazzquiz/edit.php', true);
 
     $jazzquiz = new jazzquiz($cmid);
-    $renderer = $jazzquiz->renderer; // Todo: Flytt ned til hvor variabelen blir brukt
+    $renderer = $jazzquiz->renderer;
 
     $modulename = get_string('modulename', 'jazzquiz');
     $quizname = format_string($jazzquiz->data->name, true);
@@ -182,7 +191,6 @@ function jazzquiz_edit() {
 
     // Process moving, deleting and unhiding questions...
     $questionbank = new \core_question\local\bank\view($contexts, $url, $COURSE, $cm);
-    
 
     switch ($action) {
         case 'order':
diff --git a/lang/en/jazzquiz.php b/lang/en/jazzquiz.php
index 446b9e9..0c0f145 100755
--- a/lang/en/jazzquiz.php
+++ b/lang/en/jazzquiz.php
@@ -139,9 +139,9 @@
 $string['x_seconds_left'] = '{$a}s left';
 $string['error_saving_vote'] = 'There was an error saving your vote.';
 $string['you_already_voted'] = 'Sorry, but you have already voted.';
-$string['guest_login'] = 'You are not enrolled on the course, and there is no quiz session open to guests at the moment.' ;
-$string['no_guests'] = 'It is possible that the teacher has not yet started a quiz session, and that you may try again later.  It is also possible that you have to log in as a student and enrol on the course to be allowed to take part.' ; 
-$string['ask_teacher'] = 'If in doubt, ask the teacher.' ; 
+$string['guest_login'] = 'You are not enrolled on the course, and there is no quiz session open to guests at the moment.';
+$string['no_guests'] = 'It is possible that the teacher has not yet started a quiz session, and that you may try again later.  It is also possible that you have to log in as a student and enrol on the course to be allowed to take part.';
+$string['ask_teacher'] = 'If in doubt, ask the teacher.';
 
 // Instructor Controls.
 $string['startquiz'] = 'Start quiz';
@@ -165,7 +165,8 @@
 $string['a_students_answered'] = '<b>{$a}</b> students answered at least one question.';
 $string['no_attempts_found'] = 'No attempts found.';
 $string['student'] = 'Student';
-// $string['student_id'] = 'StudentID'; //not working in report.mustache, not sure why
+
+// Problem: $string['student_id'] = 'StudentID'; //not working in report.mustache, not sure why
 $string['select_session'] = 'Select session to review:';
 $string['attendance_list'] = 'Attendance list';
 $string['download_report'] = 'Download report';
diff --git a/styles.css b/styles.css
index 8bfe2c3..99996c3 100755
--- a/styles.css
+++ b/styles.css
@@ -409,11 +409,11 @@
     position: absolute;
     right: 32px;
     margin-top: 4px;
-    color: #ff5555;
+    color: #f55;
 }
 
 #report_overview_controls a:last-child:hover {
-    color: #cc3333;
+    color: #c33;
 }
 
 #report_overview_responded table tr {
diff --git a/templates/continue_session.mustache b/templates/continue_session.mustache
index 467de12..ff98e84 100755
--- a/templates/continue_session.mustache
+++ b/templates/continue_session.mustache
@@ -1,3 +1,12 @@
+{{!
+    @template continue_session
+
+    Example context (json):
+    {
+        "str": "Continue session...",
+        "path": "https://example.com/"
+    }
+}}
 <div class="jazzquiz-box">
     <p>{{# str }} instructor_sessions_going, jazzquiz {{/ str }}</p>
     <p>
diff --git a/templates/edit_question_list.mustache b/templates/edit_question_list.mustache
index 336d1c7..3c6768d 100755
--- a/templates/edit_question_list.mustache
+++ b/templates/edit_question_list.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template edit_question_list
+}}
 <div class="generalbox boxaligncenter jazzquiz-box jazzquiz-response-container">
     <div id="questionrow" class="row">
         <div class="inline-block span6">
diff --git a/templates/guests_not_allowed.mustache b/templates/guests_not_allowed.mustache
index 112769b..0110232 100644
--- a/templates/guests_not_allowed.mustache
+++ b/templates/guests_not_allowed.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template guests_not_allowed
+}}
 <div class="jazzquiz-box">
     <p>{{# str }} guest_login, jazzquiz {{/ str }}</p>
     <p>{{# str }} no_guests, jazzquiz {{/ str }}</p>
diff --git a/templates/join_session.mustache b/templates/join_session.mustache
index 486949a..1d747c7 100755
--- a/templates/join_session.mustache
+++ b/templates/join_session.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template join_session
+}}
 <div class="jazzquiz-box">
     <p>{{# str }} join_quiz_instructions, jazzquiz {{/ str }}</p>
     <p>
diff --git a/templates/no_session.mustache b/templates/no_session.mustache
index c99f060..3bb497f 100755
--- a/templates/no_session.mustache
+++ b/templates/no_session.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template no_session
+}}
 <div class="jazzquiz-box">
     <p>{{# str }} quiz_not_running, jazzquiz {{/ str }}</p>
     <p>
diff --git a/templates/question.mustache b/templates/question.mustache
index a35283b..0d918c8 100755
--- a/templates/question.mustache
+++ b/templates/question.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template question
+}}
 <div class="jazzquiz-box {{# instructor }}instructor{{/ instructor }}">
     <form id="jazzquiz_question_form" action="" method="post" enctype="multipart/form-data" accept-charset="utf8" onsubmit="return false;">
         <div class="jazzquiz-response-container">{{{ question }}}</div>
diff --git a/templates/quiz.mustache b/templates/quiz.mustache
index 177d534..2ff9728 100755
--- a/templates/quiz.mustache
+++ b/templates/quiz.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template quiz
+}}
 <div id="jazzquiz">
     {{# instructor }}
     <div id="jazzquiz_controls_box" class="jazzquiz-box">
diff --git a/templates/report.mustache b/templates/report.mustache
index acf1802..7b59063 100755
--- a/templates/report.mustache
+++ b/templates/report.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template report
+}}
 <div class="jazzquiz-box">
     {{# select_session }}
     <div>
diff --git a/templates/start_session.mustache b/templates/start_session.mustache
index 71ad29a..2f03678 100755
--- a/templates/start_session.mustache
+++ b/templates/start_session.mustache
@@ -1,3 +1,6 @@
+{{!
+    @template start_session
+}}
 <div class="jazzquiz-box">
     <p>{{# str }} teacher_start_instructions, jazzquiz {{/ str }}</p>
     <br>
diff --git a/view.php b/view.php
index 49c8e9a..a14822b 100755
--- a/view.php
+++ b/view.php
@@ -170,12 +170,12 @@ function jazzquiz_view() {
         header('Location: /');
         exit;
     }
-    
+
     $action = optional_param('action', '', PARAM_ALPHANUM);
     $jazzquiz = new jazzquiz($cmid);
     $session = $jazzquiz->load_open_session();
-    $isCapable = true;
- 
+    $iscapable = true;
+
     /*
      * Checks that the user is authorised for he quiz.
      * access or not.
@@ -194,7 +194,7 @@ function jazzquiz_view() {
             require_capability('mod/jazzquiz:attempt', $jazzquiz->context);
         } catch (Exception $e) {
             // Indicates that the guest user is not allowed to access this session.
-            $isCapable = false;
+            $iscapable = false;
         }
     }
 
@@ -211,7 +211,7 @@ function jazzquiz_view() {
     $url->param('action', $action);
     $PAGE->set_url($url);
 
-    if ($isCapable) {
+    if ($iscapable) {
         if ($jazzquiz->is_instructor()) {
             $improviser = new improviser($jazzquiz);
             $improviser->insert_default_improvised_question_definitions();
@@ -224,8 +224,8 @@ function jazzquiz_view() {
     } else {
         /*
          * Shows "guests_not_allowed" if capability is false and
-         * session doesn't allow for guests to attend. 
-         * 
+         * session doesn't allow for guests to attend.
+         *
          * This is triggered when the session does not allow for guests
          * to attend, and the user trying to attend is a guest.
          */