Change Admin#active to Admin#deleted_at
Deleted admins get logged out automatically.
Fix BCrypt requirement
authentication!
Change when sessions get cleared
Save destination URL in session
Login works. Still need a form for it.
Login form
add strong_parameters gem
Allow creating admins
Login form!
Logging in now actually set a session param.

Ahem.
Admin email must be unique
Out with terminal-notifier, in with pry-debugger
No notification. No!
Skeleton models: Survey, SurveyPermission
A not-very-useful test
Stupid 'references'.
Rename models properly
Whitespace fixes.