Remove test for remember_token

Devise does not need the remember_token to be stored in the database.
Changed test password to foolalala. Devise wants 8 Chars
remove classic sessions controller
remove classic sign in routes and rename paths in tests accordingly
modify application controller so that :name is permitted
added sign in/out links in the top menu
added sign in/out links in the top menu
add confirmed_at to test Authentication with valid info
changed css selector in test to .alert-alert. tests pass.