FTS-117: App registration and token generation
FTS-117: Allowing access via Bearer token
FTS-117: Create credentials cache if not in the DB
Minor stylistic improvements
FTS-117: Delete tokens when removing an app
Serialization in get_my_apps was problematic
If user is banned or has no valid vo, return 403
Fixing tests
Adding tests, fixing bugs
FTS-117: Style changes
FTS-117: OAuth2 forbidden with token bearer
Introspection small fixes
FTS-117: Remove old codes and tokens
FTS-117: Log authn methods
FTS-117: Updating documentation