Adds a test for Watcher.prune with :project option.

git-svn-id: http://svn.redmine.org/redmine/trunk@13724 e93f8b46-1217-0410-a6f0-8f06a7374b81
Adds tests for Role#has_permissions?

git-svn-id: http://svn.redmine.org/redmine/trunk@13725 e93f8b46-1217-0410-a6f0-8f06a7374b81