fix non-string tooltips

Author: gboros

aggrid/datasettable/datasettable.js

@@ -2288,6 +2288,7 @@ function($sabloApplication, $sabloConstants, $log, $formatterUtils, $injector, $
                     };
 
                     HtmlTooltip.prototype.unescape = function(s) {
+                        s = String(s);
                         var re = /&(?:amp|#38|lt|#60|gt|#62|apos|#39|quot|#34);/g;
                         var unescaped = {
                           '&': '&',

aggrid/groupingtable/groupingtable.js

@@ -3189,6 +3189,7 @@ angular.module('aggridGroupingtable', ['webSocketModule', 'servoy']).directive('
 						};
 
 						HtmlTooltip.prototype.unescape = function(s) {
+							s = String(s);
 							var re = /&(?:amp|#38|lt|#60|gt|#62|apos|#39|quot|#34);/g;
 							var unescaped = {
 							  '&': '&',