tasks #6924: display copy form with columns

Change-Id: Ice3302e366b5b4bc596ac309a0c441caf72644bb
Merge commit 'refs/changes/91/2491/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  tasks #6924: display copy form with columns

Change-Id: Ifb1ac3a671a5010d6ff6952675acd1c46ec81982
This is Tuleap 7.0.99.44

Change-Id: I1fb93d3796871a37689cf5005588ce6edf69b6a8