story #3544 - copy a tracker template with its permissions

When you create a tracker from a template of another project:
- copy the permissions for the static ugroup that match
  (If I have a ugroup "staff" and the template project set perms on a
ugroup named "staff" we assume that they are the same ugroup)

- inform the user about this assumption

- warn the user if there are permissions on ugroups that do not seem to
  exist in the current project

Change-Id: I58d263ff5315907cb1e122962ba3fd96758d99d4
Merge commit 'refs/changes/57/457/4' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  story #3544 - copy a tracker template with its permissions
This is Tuleap 6.1.99.8