adding tuleap dependency: tuleap-documentation

Change-Id: I67b7dfb78287e6b428e8e3e2d3545497497c422c
Merge commit 'refs/changes/36/836/2' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  adding tuleap dependency: tuleap-documentation

Change-Id: I1c6ad5dca21350c0ad513a888337d86676ace785
This is Tuleap 6.3.99.20

Change-Id: I5bf686bb319b93c658ff8cec19c3e3df18142010