removed CSS contain from widgets

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

@@ -19,7 +19,6 @@ export default class ButtonWidget extends NoteContextAwareWidget {
 
     doRender() {
         this.$widget = $(TPL);
-        this.overflowing();
 
         if (this.settings.onClick) {
             this.$widget.on("click", () => this.settings.onClick(this));

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

@@ -76,7 +76,6 @@ const TPL = `
 export default class GlobalMenuWidget extends BasicWidget {
     doRender() {
         this.$widget = $(TPL);
-        this.overflowing();
 
         this.$widget.find(".show-about-dialog-button").on('click',
             () => import("../../dialogs/about.js").then(d => d.showDialog()));

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

@@ -32,7 +32,6 @@ const TPL = `
 export default class NoteActionsWidget extends NoteContextAwareWidget {
     doRender() {
         this.$widget = $(TPL);
-        this.overflowing();
 
         this.$showSourceButton = this.$widget.find('.show-source-button');
         this.$renderNoteButton = this.$widget.find('.render-note-button');