strip tracking parameters when parsing urls

www/assert/main.js

@@ -245,6 +245,17 @@ define([
             hd.type === 'invite');
     }, "test support for invite urls");
 
+    assert(function (cb) {
+        var url = '/pad/?utm_campaign=new_comment&utm_medium=email&utm_source=thread_mailer#/1/edit/3Ujt4F2Sjnjbis6CoYWpoQ/usn4+9CqVja8Q7RZOGTfRgqI/';
+        var secret = Cryptpad.parsePadUrl(url);
+
+        return cb(secret.hashData.version === 1 &&
+            secret.hashData.mode === "edit" &&
+            secret.hashData.channel === "3Ujt4F2Sjnjbis6CoYWpoQ" &&
+            secret.hashData.key === "usn4+9CqVja8Q7RZOGTfRgqI" &&
+            !secret.hashData.present);
+    }, "test support for ugly tracking query paramaters in url");
+
     assert(function (cb) {
         // TODO
         return cb(true);

www/common/common-hash.js

@@ -114,6 +114,7 @@ Version 1
 
         if (!href) { return ret; }
         if (href.slice(-1) !== '/') { href += '/'; }
+        href = href.replace(/\/\?[^#]+#/, '/#');
 
         var idx;