rename to _steps, fix matching of answer logic

the rename and removal of ( helps with dev tooling
the answer logic needed to be updated because the DB is
pre-populated with some answers
rename for dev tooling
standard formatting
reload choice since a line earlier changed it in the DB

sometimes Rails is smart enough to know the object is changed in
the DB so it then throws an error when you continue with a stale
object
sign out redirect has changed
remove custom sessions controller

the cookie handling here isn't needed anymore
the redirect to the referrer isn't a good thing to do in general
make sure we are really logged out