Use date as default order in Gantt charts

This fix bugs #2192 - Cannot sort the Gantt renderer
Escape the path before passing it to viewvc

This fix sla #682 - Viewvc display issue for file which name contains
"$"
Merge commit 'refs/changes/69/269/1' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  Use date as default order in Gantt charts
Merge commit 'refs/changes/70/270/1' of http://gerrit.tuleap.net/tuleap into tuleap-stable-master

* http://gerrit.tuleap.net/tuleap:
  Escape the path before passing it to viewvc
Tuleap 5.10.99.34