Get rid of ?venotify= from URL post-save

Use history.replaceState if available to get rid of the venotify query
parameter to avoid polluting URLs.

Ideally this would just use a cookie like the core post-edit
notification.

Change-Id: I6ce142012053e2fc18dd44fd0f7b82914acea076

modules/ve-mw/init/targets/ve.init.mw.DesktopArticleTarget.init.js

@@ -1047,6 +1047,10 @@
 			} );
 
 			delete uri.query.venotify;
+			// Get rid of the ?venotify= from the URL
+			if ( history.replaceState ) {
+				history.replaceState( null, document.title, uri );
+			}
 		}
 	} );
 }() );