refactored TOC and Highlights close buttons and added a button to quickly access options

src/public/app/widgets/buttons/onclick_button.js

@@ -6,6 +6,7 @@ export default class OnClickButtonWidget extends AbstractButtonWidget {
 
         if (this.settings.onClick) {
             this.$widget.on("click", e => {
+                e.stopPropagation();
                 this.$widget.tooltip("hide");
 
                 this.settings.onClick(this, e);