Removed some test contexts.

git-svn-id: http://svn.redmine.org/redmine@13649 e93f8b46-1217-0410-a6f0-8f06a7374b81
Added missing tests for notify_about?

git-svn-id: http://svn.redmine.org/redmine@13650 e93f8b46-1217-0410-a6f0-8f06a7374b81