Start using Capybara feature specs instead of request specs
Fontend - move CSS assets to a theme folder
Rename CSS theme s/dradis_extjs/classic/
Start with a better login form

We'll most likely rework this later, but it's good to start with a
better looking login form.

See:
  http://cssdeck.com/labs/login-form-using-html5-and-css3
  http://designify.me/web-design/10-beautiful-free-css-login-forms/
Boilerplate HTML5 template
Remove protected_attributes from Core models

In Rails 4 we need to use strong_parameters in the controllers instead.
Move Controller / View / Route classes to frontend gem

This is the first commit in that direction.
Preauth layout - include flash messages
Implement sessions#init view inside frontend
Sessions#init - remove Meta-Server parts
Sessions - detect unset shared password and redirect to /setup
Sessions - remove legacy views and put #new under frontend
SessionsController use namespaced Dradis::Configuration
Move BaseHelper (:flash_messages) to frontend/
SessionsController - validate password confirmation on #setup
SessionsController - use BCrypt to store the shared password
Bump Rails version to 4.0.3