use slide toggle for files app

apps/files/js/files.js

@@ -279,13 +279,7 @@
 				}
 			}
 
-			$('#app-settings-header').on('click', function() {
-				var $settings = $('#app-settings');
-				$settings.toggleClass('opened');
-				if ($settings.hasClass('opened')) {
-					$settings.find('input').focus();
-				}
-			});
+
 			$('#webdavurl').on('click', function () {
 				$('#webdavurl').select();
 			});

apps/files/templates/appnavigation.php

@@ -6,7 +6,7 @@
 	</ul>
 	<div id="app-settings">
 		<div id="app-settings-header">
-			<button class="settings-button"></button>
+			<button class="settings-button" data-apps-slide-toggle="#app-settings-content"></button>
 		</div>
 		<div id="app-settings-content">
 				<h2><?php p($l->t('WebDAV'));?></h2>