request #6847: red pencil goes full retard when mandatory selectbox is empty

Change-Id: I66f9cadacd5c980e15dd0b252ebfd3da0402bd1d
Merge commit 'refs/changes/01/2501/1' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6847: red pencil goes full retard when mandatory selectbox is empty

Change-Id: I993bdf5a7dcfa9774dca8e4f5c07c3da08725448
This is Tuleap 7.0.99.50

Change-Id: Ic67885e20594dd041204e224427d7f50121d1c70