update controller not to extend apiController and make some changes in repository + serializer

src/Bundle/ChillMainBundle/DependencyInjection/ChillMainExtension.php

@@ -792,7 +792,7 @@ class ChillMainExtension extends Extension implements
                         ],
                     ],
                 ],
-                [
+/*                [
                     'class' => \Chill\MainBundle\Entity\DashboardConfigItem::class,
                     'controller' => \Chill\MainBundle\Controller\DashboardApiController::class,
                     'name' => 'dashboard-config-item',
@@ -833,7 +833,7 @@ class ChillMainExtension extends Extension implements
                             ],
                         ],
                     ],
-                ],
+                ],*/
             ],
         ]);
     }