Annotation Tools: Adding Check for Grouping in MyNotes

- Grouping instance checked instead of prototype

- adding comments

common/static/js/vendor/ova/catch/js/catch.js

@@ -1124,10 +1124,16 @@ CatchAnnotation.prototype = {
         // checks to make sure that Grouping is redone when switching tags in text annotations
         if (this.options.media === 'text') {
             if (this.current_tab ==='public') {
+                // this is to check if user is is MyNotes instead of the annotation component
+                if (typeof this.annotator.plugins.Grouping !== 'undefined') {
                     this.annotator.plugins.Grouping.useGrouping = 0;
+                }
             } else {
+                // this is to check if user is is MyNotes instead of the annotation component
+                if (typeof this.annotator.plugins.Grouping !== 'undefined'){
                     this.annotator.plugins.Grouping.useGrouping = 1;
                 }
+            }
             this.annotator.publish("changedTabsInCatch");
         }
         // Change userid and refresh
@@ -1156,6 +1162,9 @@ CatchAnnotation.prototype = {
         var searchtype = searchtype || "";
         var searchInput = searchInput || ""; 
         this.clean = true;
+
+        // the following cannot run in notes for there are no highlights
+        if($("#notesHolder").length === 0)
             this._clearAnnotator();
         
         var annotator = this.annotator;