message: refactor(plugins/flow-client): use App from core
diff: @@ -6,7 +6,7 @@ import { Store, StoreModule } from '@ngrx/store';
  import { Observable } from 'rxjs';
  import { BsModalModule } from 'ng2-bs3-modal';
  -import { App } from '@flogo-web/client-core';
  +import { App } from '@flogo-web/core';
  import {
  TriggersApiService,
  RESTAPIHandlersService,
  