App sorting and user sorting

Conflicts:
	app/views/users/index.html.haml
Better User roles - permit and watch permissions
Redmine now includes a optional tracker_id field

By defining a tracker_id, you can make sure that
the ticket will be created with the right "type".

If it is not filled, then it fallbacks to default
which is the first in the priority list that is
available to the project.
Merge branch 'apps_and_users_ordering' into netbrick
Merge branch 'user_roles' into netbrick

Conflicts:
	app/views/users/index.html.haml