Use param service in query

Uses `ApiParamMappingService.constructor` which sounds wrong... ?

frontend/app/components/api/api-experimental/api-param-mapping.service.ts

@@ -29,16 +29,21 @@
 export class ApiParamMappingService {
 
   //TODO: Add missing properties.
-  protected propertyMap = {
+  protected static propertyMap = {
     assigned_to: 'assignee',
     updated_at: 'updatedAt'
   };
 
-  public transformV3(columns: any[]) {
-    return columns.map(column => column.name = this.propertyMap[column.name] || column.name);
+  public static columnListToV3(columns: any[]) {
+    columns.forEach(column => column.name = ApiParamMappingService.columnToV3(column));
+    return columns;
+  }
+
+  public static columnToV3(column: any) {
+    return ApiParamMappingService.propertyMap[column.name] || column.name;
   }
 }
 
 angular
   .module('openproject.api')
-  .service('apiParamMapping', ApiParamMappingService);
+  .service('ApiParamMappingService', ApiParamMappingService);

frontend/app/components/api/api-work-packages/api-work-packages.service.ts

@@ -36,7 +36,7 @@ export class ApiWorkPackagesService {
                protected $stateParams,
                protected $q:ng.IQService,
                protected apiV3:restangular.IService,
-               protected apiParamMapping:ApiParamMappingService) {
+               protected apiMetaData:ApiMetaDataService) {
 
     this.WorkPackages = apiV3.service('work_packages');
   }

frontend/app/components/query/query-service.service.ts

@@ -27,11 +27,11 @@
 // ++
 
 function QueryService(Query,
+                      ApiParamMappingService,
                       $http,
                       PathHelper,
                       $q,
                       AVAILABLE_WORK_PACKAGE_FILTERS,
-                      ApiParamMappingService,
                       StatusService,
                       TypeService,
                       PriorityService,
@@ -199,7 +199,7 @@ function QueryService(Query,
       var url = projectIdentifier ? PathHelper.apiProjectAvailableColumnsPath(projectIdentifier) : PathHelper.apiAvailableColumnsPath();
 
       return QueryService.doGet(url, function(response){
-        availableColumns = response.data.available_columns;
+        availableColumns = ApiParamMappingService.constructor.columnListToV3(response.data.available_columns);
         return availableColumns;
       });
     },