don't display leave/join buttons for admin group

public/src/modules/helpers.js

@@ -115,12 +115,11 @@
 
 	// Groups helpers
 	helpers.membershipBtn = function(groupObj) {
-		if (groupObj.isMember) {
 		if (groupObj.name==='administrators') {
                 		return '';
             	} else {
+			if (groupObj.isMember) {
 				return '<button class="btn btn-danger" data-action="leave" data-group="' + groupObj.displayName + '"><i class="fa fa-times"></i> Leave Group</button>';
-            		}
 			} else {
 				if (groupObj.isPending) {
 					return '<button class="btn btn-warning disabled"><i class="fa fa-clock-o"></i> Invitation Pending</button>';
@@ -130,6 +129,7 @@
 					return '<button class="btn btn-success" data-action="join" data-group="' + groupObj.displayName + '"><i class="fa fa-plus"></i> Join Group</button>';
 				}
 			}
+            	}
 	};
 
 	helpers.spawnPrivilegeStates = function(member, privileges) {