Fix request #7424: Change the compatibility mode text in Mediawiki

Change-Id: Idcbf7634596e6dec874c7fa047555bf1fcd8a613
Merge commit 'refs/changes/83/2983/2' of ssh://gerrit.tuleap.net:29418/tuleap into tuleap-stable-master

* ssh://gerrit.tuleap.net:29418/tuleap:
  Fix request #7424: Change the compatibility mode text in Mediawiki

Change-Id: Icd5d409c2498493ce2235c5242e82314bee8f51e
Tuleap 7.4.99.23

Change-Id: I57257b5d2dc4475f1a9441f8178129177b934ae5