Enable the toggleSelect extension in multi-select dropdowns

The toggleSelect extension for Select2 makes possible to unselect items
in a multi-select dropdown by clicking on them; this behaviour should be
enabled in all the multi-select dropdowns used in the server.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

apps/files_external/js/settings.js

@@ -93,6 +93,7 @@ function addSelect2 ($elements, userListLimit) {
 		placeholder: t('files_external', 'All users. Type to select user or group.'),
 		allowClear: true,
 		multiple: true,
+		toggleSelect: true,
 		dropdownCssClass: 'files-external-select2',
 		//minimumInputLength: 1,
 		ajax: {

apps/systemtags/js/systemtagsfilelist.js

@@ -88,6 +88,7 @@
 				placeholder: t('systemtags', 'Select tags to filter by'),
 				allowClear: false,
 				multiple: true,
+				toggleSelect: true,
 				separator: ',',
 				query: _.bind(this._queryTagsAutocomplete, this),
 

settings/js/settings.js

@@ -30,6 +30,7 @@ OC.Settings = _.extend(OC.Settings, {
 				placeholder: t('core', 'Groups'),
 				allowClear: true,
 				multiple: true,
+				toggleSelect: true,
 				separator: '|',
 				query: _.debounce(function(query) {
 					var queryData = {};