Renamed postal_code attribute of User to zipcode
Configured sessions to handle case in inauthenticated access
Fixed: authenticate! and redirect_back working properly
Fixed: Was missing current_user? as before_action call
Fixed: params[:postal_code] should be params[:zipcode]
On the way to a proper registration flow
Reverted registration method until further discussion, but keeping authentications#create for OAuth callback handling
Minor sprucing up
Removed remnants of old registration process attempt
Populated authentications#destroy