This commit adds tests for the DeleteUserDatabase view and improves the grammar of flash messages of the userdbs.views module.
This commit adds tests for userdbs.views.AddUserDatabase, the view itself has been modified so that it is only reachable when the hosting package actually has database options available.
This commit adds a set of unit tests for the userdbs app. Some tests will fail because a refactoring to signals comes with the next commit.
