add groups feature

res/app/settings/general/date-format/date-format-controller.js

@@ -0,0 +1,27 @@
+/**
+* Copyright © 2019 code initially contributed by Orange SA, authors: Denis Barbaron - Licensed under the Apache license 2.0
+**/
+
+module.exports = function DateFormatCtrl(
+  $scope
+, SettingsService
+) {
+
+  $scope.defaultDateFormat = 'M/d/yy h:mm:ss a'
+  SettingsService.bind($scope, {
+    target: 'dateFormat'
+  , source: 'dateFormat'
+  , defaultValue: $scope.defaultDateFormat
+  })
+
+  $scope.$watch(
+    function() {
+      return SettingsService.get('dateFormat')
+    }
+  , function(newvalue) {
+      if (typeof newvalue === 'undefined') {
+        SettingsService.set('dateFormat', $scope.defaultDateFormat)
+      }
+    }
+  )
+}