feat(login): new login flow (MIN-281)

Add new login flow - Design link

Flow: Login after authorization:

• For "user": close login modal
• For "curator/admin": show new dialog with options "Back to the map" and "Go to the admin panel"

For both users, the icon changes to "logged in"

Reopening login for logged-in user:

For "user":

• Switch account -> back to login
• Logout

For "curator/admin":

• Go to the admin panel
• Switch account -> back to login
• Logout

Additionally, the login button has been removed in the overlay drawer at Marek's request

login

Closes MIN-281