Also added testing to cover as part of this in addition to adding the
core backup code handling required.
Also added the standardised translations for switching mfa mode and
adding testing for this switching.
Also continued a bit on the MFA verification system.
Moved some MFA routes to public space using updated login service to get
the current user that is either logged in or last attempted login (With
correct creds).
Discovered some difficult edge cases:
- User image loading in header bar when using local_secure storage
- 404s showing user-specific visible content due to content listing on
404 page since user is in semi-logged in state. Maybe need to go
through and change up how logins are handled to centralise and
provide us better control at login time to prevent any auth level.
