Made image cleanup safer

Also fixed drawing update in markdown editor.
Added shortcut for MD editor to view drawing manager.

resources/assets/js/vues/image-manager.js

@@ -101,6 +101,7 @@ const methods = {
     },
 
     cancelSearch() {
+        if (!this.searching) return;
         this.searching = false;
         this.searchTerm = '';
         this.images = preSearchImages;