Login: disable button while request active
Add class to body when user is logged in
Change feedback position only when logged in
Login: remove alert error message
Login: add feedback loader
Projects: add feedback loaders
Projects: remove old loader
Clients: add feedback loaders
Clients: remove old loader
Settings: add feedback loaders
Settings: remove old loader
Login: remove any existing loaders, on init
Unit-tests: Auth: update tests, using feedback