save group ids not display names in configuration

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

Author: blizzz

apps/files_external/js/settings.js

@@ -93,8 +93,8 @@ function addSelect2 ($elements, userListLimit) {
 					var userCount = 0; // users is an object
 
 					// add groups
-					$.each(data.groups, function(i, group) {
-						results.push({name:group+'(group)', displayname:group, type:'group' });
+					$.each(data.groups, function(gid, group) {
+						results.push({name:gid+'(group)', displayname:group, type:'group' });
 					});
 					// add users
 					$.each(data.users, function(id, user) {