Added more ajax select2 boxes to checkouts, remove helper ->with() methods

app/Http/Controllers/Api/AssetsController.php

@@ -303,6 +303,9 @@ class AssetsController extends Controller
                     'image' => ($asset->getImageUrl()) ? $asset->getImageUrl() : null,
                 ];
         }
+
+        array_unshift($assets_array, ['id'=> '', 'text'=> trans('general.select_asset'), 'image' => null]);
+        
         $results = [
             'items' => $assets_array,
             'pagination' =>

app/Http/Controllers/Api/LocationsController.php

@@ -175,6 +175,9 @@ class LocationsController extends Controller
                     'image' => ($location->image) ? url('/').'/uploads/locations/'.$location->image : null,
                 ];
         }
+
+        array_unshift($locations_array, ['id'=> '', 'text'=> trans('general.select_location'), 'image' => null]);
+
         $results = [
             'items' => $locations_array,
             'pagination' =>

app/Http/Controllers/Api/UsersController.php

@@ -165,6 +165,8 @@ class UsersController extends Controller
                     'image' => ($user->present()->gravatar) ? $user->present()->gravatar : null,
                 ];
         }
+
+        array_unshift($users_array, ['id'=> '', 'text'=> trans('general.select_user'), 'image' => null]);
         $results = [
             'items' => $users_array,
             'pagination' =>