tasks #7348: fix notice when regex special chars in url

Change-Id: I8857df32081f640caf12ac8ec16aa33d648f39f9
Merge commit 'refs/changes/00/2900/1' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7348: fix notice when regex special chars in url

Change-Id: I3ed04bf20dd1deb8c22431b4ca9563730f2781c4
Tuleap 7.3.99.60

Change-Id: I1b67ff789cba90df70936cae34ace590d7b64815