remove old screenshots

lectures/grass.html

@@ -168,8 +168,6 @@ <h3>GRASS GIS</h3>
 
 <section>
 <h3>GRASS GIS</h3>
-<ul>
-    <li>
         Timeline:
         <ul>
         <li>1983 started at US Army CERL
@@ -180,17 +178,10 @@ <h3>GRASS GIS</h3>
         <li>1999 GNU GPL, international team of developers
         <li>2008 OSGeo Project
         <li>40+ years of GRASS GIS development
-<!--
-        <li>check out <a href="https://trac.osgeo.org/grass/timeline">last change</a>
-            <span class="small">(probably just few hours ago)</span>
-        <li>last stable release October, 2021 <span class="small">[last checked December 2021]</span>
--->
         </ul>
-</ul>
 <img src="img/grass_logo_development.png" class="stretch">
 </section>
 
-
 <section>
 <h3>Historical Video</h3>
 <p class="small">
@@ -321,25 +312,21 @@ <h3>Naming Convention for Tools (Modules)</h3>
 
 <section>
 <h3>User Interfaces</h3>
-<ul>
-<li>Tools (modules) can be accessed using:
+Tools (modules) can be accessed using:
     <ul>
         <li>Graphical User Interface (GUI)
         <li>Command Line Interface (CLI)
         <li>Python
+        <li>Third party interfaces (QGIS, R, ...)
     </ul>
-</ul>
-<br>
-<img src="img/grass_count_and_modules.png" class="stretch">
+<!--<img src="img/grass_count_and_modules.png" class="stretch">-->
 </section>
 
 
 <section>
 <h3>Graphical User Interface</h3>
-<ul>
-<li>The interface for a desktop
-</ul>
-<br>
+The interface for a desktop
+<p>
 <img src="img/GRASS8_4GUI.jpg" class="stretch">
 <!--<img src="img/grass_gui.png" class="stretch">-->
 </section>