[ADF-971] Create task/process attachment should show the new button (#2069)

* Remove the drag and drop
Change the design button
Fix the Event with the name inside the Readme

* Fix unit test

* Rollback id button

demo-shell-ng2/app/components/activiti/activiti-process-attachments.component.ts

@@ -22,6 +22,7 @@ import { UploadService } from 'ng2-alfresco-core';
 @Component({
     selector: 'activiti-process-attachments',
     templateUrl: './activiti-process-attachments.component.html',
+    styleUrls: ['./activiti-process-attachments.component.css'],
     providers: [
         { provide: UploadService, useClass: ProcessUploadService }
     ]