Remove submit button in modal if the user is not logged in

Change-Id: I34490c1f49041223c4923a4ff5a914d2e4c626b8
Merge commit 'refs/changes/99/1899/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  Remove submit button in modal if the user is not logged in

Change-Id: Ib02843dc50a420bf98b70b262e97e7a28526fd9c
This is Tuleap 6.10.99.15

Change-Id: I89547ffb7b192fceaa9d714b6e0a88e4002a70b8