Fix XSS vulnerabilities on bookmarks.

Change-Id: I0c801973fb774735da9ca1323f642fbda7dc258e
Merge commit 'refs/changes/68/1468/5' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Fix XSS vulnerabilities on bookmarks.

Change-Id: I1ba1e11d938e7a9936f038454e5771c3608514a0
This is Tuleap 6.7.99.8

Change-Id: Ida116044b46af5c2f58a6169aceba0979c18e325