story #6018: Display motd in Experimental theme

Change-Id: I1f173ab09603287948aa23778da33d2b28004a97
Merge commit 'refs/changes/64/1864/3' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  story #6018: Display motd in Experimental theme

Change-Id: I57eea943d9aed1f4dfb4b869fea9518e33c6b1cb
Tuleap 6.10.99.6

Change-Id: Ic79c7d6698befcd55bbac3d43a37d365ea1919bb