fix(client:auth): fix hasOwnProperty instances, fix User usage (#2232)

fixes #2212 [skip ci]

Author: Awk34

Diff for: templates/app/client/components/auth(auth)/auth.service.js

@@ -57,7 +57,7 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
      */
     logout() {
       $cookies.remove('token');
-      currentUser = new User();
+      currentUser = new _User();
     },
 
     /**
@@ -103,7 +103,7 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
      * @return {Promise}
      */
     getCurrentUser(callback?: Function) {
-      var value = currentUser.hasOwnProperty('$promise')
+      var value = _.get(currentUser, '$promise')
         ? currentUser.$promise
         : currentUser;
 
@@ -135,7 +135,8 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
     isLoggedIn(callback?: Function) {
       return Auth.getCurrentUser(undefined)
         .then(user => {
-          var is = user.hasOwnProperty('role');
+          let is = _.get(user, 'role');
+
           safeCb(callback)(is);
           return is;
         });
@@ -147,7 +148,7 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
      * @return {Bool}
      */
     isLoggedInSync() {
-      return currentUser.hasOwnProperty('role');
+      return !!_.get(currentUser, 'role');
     },
 
      /**
@@ -160,9 +161,7 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
     hasRole(role, callback?: Function) {
       return Auth.getCurrentUser(undefined)
         .then(user => {
-          var has = user.hasOwnProperty('role')
-            ? hasRole(user.role, role)
-            : false;
+          let has = hasRole(_.get(user, 'role'), role);
 
           safeCb(callback)(has);
           return has;
@@ -176,7 +175,7 @@ export function AuthService($location, $http, $cookies, $q, appConfig, Util, Use
       * @return {Bool}
       */
     hasRoleSync(role) {
-      return hasRole(currentUser.role, role);
+      return hasRole(_.get(currentUser, 'role'), role);
     },
 
      /**