Allow to create group with 1 participant

app/js/controllers.js

@@ -567,9 +567,8 @@ angular.module('myApp.controllers', ['myApp.i18n'])
 
     $scope.openGroup = function () {
       ContactsSelectService.selectContacts({action: 'new_group'}).then(function (userIDs) {
-        if (userIDs.length == 1) {
+        if (userIDs && 
-          $scope.dialogSelect(AppUsersManager.getUserString(userIDs[0]))
+            userIDs.length) {
-        } else if (userIDs.length > 1) {
           var scope = $rootScope.$new()
           scope.userIDs = userIDs