* Bump FAB to 2.0.0
* [tests] whitelist SecurityApi login and refresh endpoints
* [style] Fix, C812 missing trailing commas
* [security] Remove SUPERSET_UPDATE_PERMS flag
Registering sources needs to be performed after the views are
initialized on UPDATE_PERMS=False configuration
* [docs] New, FAB_UPDATE_PERMS and flask fab cli
* [docs] Fix, db upgrade needs to come first, create-admin needs a db
* [cli] New, superset init bootstraps all permissions for FAB and Superset
* [style] Fix, flakes