[ADF-1403] Upload Dialog - Delete files event (#2234)

* remove provisional service

* Error and Delete events

* delete status

* separate upload events

* update demo

* files upload counter and errors

* pendig files icon and action

* remove multiple files error key

* handle cancel files

* fixed component theme

* remove fdescribe

* resolved comments

* throw error

ng2-components/ng2-alfresco-core/src/models/file.model.ts

@@ -34,7 +34,8 @@ export enum FileUploadStatus {
     Progress = 3,
     Cancelled = 4,
     Aborted = 5,
-    Error = 6
+    Error = 6,
+    Deleted = 7
 }
 
 export class FileModel {