refreshes task definitions on delete

resolves #531

Author: cppwfs

ui/src/app/tasks/task-definitions/task-definitions.component.ts

@@ -107,6 +107,7 @@ export class TaskDefinitionsComponent implements OnInit {
         this.cancel();
         this.toastyService.success('Successfully destroyed task definition "'
           + taskDefinition.name + '"');
+        this.loadTaskDefinitions();
       },
       error => {
         this.toastyService.error(error);

ui/src/app/tasks/tasks.service.ts

@@ -197,9 +197,6 @@ export class TasksService {
     const headers = new Headers({'Content-Type': 'application/json'});
     const options = new RequestOptions({headers: headers});
     return this.http.delete('/tasks/definitions/' + name, options)
-      .map(data => {
-        this.taskDefinitions.items = this.taskDefinitions.items.filter(item => item.name !== name);
-      })
       .catch(this.errorHandler.handleError);
   }