Allow model upload via file dialog

* eases use for single screen setups and mobile devices (e.g., phones)

Change-Id: I82fca7420dc113aadb036cd15459398ecae2a4b7

src/app/deploying-application/uploader-xmi/uploader-xmi.component.html

@@ -12,6 +12,11 @@
           Just drag and drop xmi files here
         </div>
 
+        <div>
+            <input [fileUploadInputFor]="fileUploadQueue" type="file"
+                   id="fileUploadDialog">
+        </div>
+
         <mat-progress-bar *ngIf="uploadInProgress" color="primary" mode="indeterminate"></mat-progress-bar>
 
         <div class="uploaded-files-list">