Fixes #4116

- Added config to prevent closing the dialog (except by clicking the
'cancel'-button of course)
- Changed property 'width' of the motion-detail-card, so the size will be
adjusted automatically.

client/src/app/site/motions/components/motion-detail/motion-detail.component.ts

@@ -758,7 +758,8 @@ export class MotionDetailComponent extends BaseViewComponent implements OnInit {
         this.dialogService.open(MotionChangeRecommendationComponent, {
             height: '400px',
             width: '600px',
-            data: data
+            data: data,
+            disableClose: true
         });
     }