This fixes a TODO in the code to validate the RedirectURIs when adding
or editing an OAuth application in user settings.
This also includes a refactor of the user settings tests to only create
the DB once per top-level test to avoid reloading fixtures.
(cherry picked from commit 16a7d343d78807e39df124756e5d43a69a2203a3)
Conflicts:
services/forms/user_form.go
tests/integration/user_settings_test.go
simple conflicts
