widget can be also enabled/disabled using labels

src/public/javascripts/services/sidebar.js

@@ -14,7 +14,6 @@ class Sidebar {
             widgets: []
         }, state);
         this.widgets = [];
-        this.rendered = false;
         this.$sidebar = ctx.$tabContent.find(".note-detail-sidebar");
         this.$widgetContainer = this.$sidebar.find(".note-detail-widget-container");
         this.$showSideBarButton = this.ctx.$tabContent.find(".show-sidebar-button");
@@ -54,8 +53,10 @@ class Sidebar {
         }
 
         for (const widget of this.widgets) {
+            if (widget.cleanup) {
                 widget.cleanup();
             }
+        }
 
         this.widgets = [];
         this.$widgetContainer.empty();
@@ -100,7 +101,7 @@ class Sidebar {
                 this.$widgetContainer.append($el);
             }
             catch (e) {
-                ws.logError(`Error while loading widget ${widget.widgetName}: ${e.message}`);
+                ws.logError(`Error while rendering widget ${widget.widgetName}: ${e.message}`);
             }
         }
     }

src/public/javascripts/widgets/similar_notes.js

@@ -11,8 +11,6 @@ class SimilarNotesWidget extends StandardWidget {
     async doRenderBody() {
         const similarNoteIds = await server.get('similar_notes/' + this.ctx.note.noteId);
 
-        console.log(similarNoteIds);
-
         if (similarNoteIds.length === 0) {
             this.$body.text("No similar notes found ...");
             return;

src/public/javascripts/widgets/standard_widget.js

@@ -89,8 +89,17 @@ class StandardWidget {
     async doRenderBody() {}
 
     async isEnabled() {
+        const label = await this.ctx.note.getLabelValue(this.widgetName);
+
+        if (label === 'enabled') {
+            return true;
+        } else if (label === 'disabled') {
+            return false;
+        }
+        else {
             return this.widgetOptions.enabled;
         }
+    }
 
     isExpanded() {
         return this.$bodyWrapper.hasClass("show");