Remove unneeded tabindex="0" from sidebar and app content

Signed-off-by: julia.kirschenheuter <julia.kirschenheuter@nextcloud.com>

apps/files_sharing/templates/public.php

@@ -2,7 +2,7 @@
 /** @var \OCP\IL10N $l */
 /** @var array $_ */
 ?>
-<div id="app-content" tabindex="0">
+<div id="app-content">
 <?php if ($_['previewSupported']): /* This enables preview images for links (e.g. on Facebook, Google+, ...)*/?>
 	<link rel="image_src" href="<?php p($_['previewImage']); ?>" />
 <?php endif; ?>

apps/settings/templates/settings/frame.php

@@ -34,7 +34,7 @@
 		<div id="app-navigation-caption-personal" class="app-navigation-caption"><?php p($l->t('Personal')); ?></div>
 	<?php endif; ?>
 	<nav class="app-navigation-personal" aria-labelledby="app-navigation-caption-personal">
-		<ul tabindex="0">
+		<ul>
 			<?php foreach ($_['forms']['personal'] as $form) {
 				if (isset($form['anchor'])) {
 					$anchor = \OC::$server->getURLGenerator()->linkToRoute('settings.PersonalSettings.index', ['section' => $form['anchor']]);
@@ -61,7 +61,7 @@
 		<div id="app-navigation-caption-administration" class="app-navigation-caption"><?php p($l->t('Administration')); ?></div>
 	<?php endif; ?>
 	<nav class="app-navigation-administration" aria-labelledby="app-navigation-caption-administration">
-		<ul tabindex="0">
+		<ul>
 			<?php foreach ($_['forms']['admin'] as $form) {
 				if (isset($form['anchor'])) {
 					$anchor = \OC::$server->getURLGenerator()->linkToRoute('settings.AdminSettings.index', ['section' => $form['anchor']]);
@@ -84,6 +84,6 @@
 		</ul>
 	</nav>
 </div>
-<div id="app-content" tabindex="0" data-active-section-id="<?php print_unescaped($_['activeSectionId']) ?>">
+<div id="app-content" data-active-section-id="<?php print_unescaped($_['activeSectionId']) ?>">
 	<?php print_unescaped($_['content']); ?>
 </div>