Merge pull request #5918 from Countly/SER-2270-percentage-symbol-in-an-event-name-breaks-drill

[SER-2270] Percentage symbol in an event name breaks drill

Author: ar2rsawseen

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 Fixes:
 - [core] Fixed a bug causing events to not being loaded when there's an escaped character in the event name
+- [core] Fixed a bug that was causing drill to crash when there's a percentage symbol in the event name
 - [gridfs] fixes for moving to Promises
 - [reports] Fixes report generation failure due to SSL error
 - [surveys] "Select one" text in the widget can be edited now

frontend/express/public/javascripts/countly/countly.template.js

@@ -3901,7 +3901,7 @@ Backbone.history.checkUrl = function() {
 
 Backbone.history.noHistory = function(hash) {
     if (history && history.replaceState) {
-        history.replaceState(undefined, undefined, hash);
+        history.replaceState(undefined, undefined, encodeURI(hash));
     }
     else {
         location.replace(hash);