implement clearTooltips

www/common/common-interface.js

@@ -297,6 +297,11 @@ define([
     };
 
     // Tooltips
+
+    UI.clearTooltips = function () {
+        $('.tippy-popper').remove();
+    };
+
     UI.addTooltips = function () {
         var MutationObserver = window.MutationObserver;
         var addTippy = function (el) {

www/common/cryptpad-common.js

@@ -77,6 +77,7 @@ define([
     common.unnotify = UI.unnotify;
     common.getIcon = UI.getIcon;
     common.addTooltips = UI.addTooltips;
+    common.clearTooltips = UI.clearTooltips;
 
     // import common utilities for export
     common.find = Util.find;