Speed up build (#1852)

* single build webpack

* fix demo shell test

ng2-components/ng2-activiti-diagrams/src/components/diagram.component.ts

@@ -23,7 +23,6 @@ import { RaphaelService } from './raphael/raphael.service';
 import { DiagramModel, DiagramElementModel } from '../models/diagram.model';
 
 @Component({
-    moduleId: module.id,
     selector: 'activiti-diagram',
     styleUrls: ['./diagram.component.css'],
     templateUrl: './diagram.component.html'
@@ -85,7 +84,6 @@ export class DiagramComponent {
             },
             (err: any) => {
                 this.onError.emit(err);
-                this.logService.error(err);
             }
         );
     }