Merge branch 'master' of https://github.com/thelia/thelia

# By Manuel Raynaud (10) and others
# Via franck (4) and others
* 'master' of https://github.com/thelia/thelia: (24 commits)
  Added documents action and loop
  Typo
  Added UrlRewritingTrait to manage URLs from model classes
  fix typo
  Started category management
  add some php doc
  integrate swiftMailer as mailer solution
  add swiftmailer in composer
  use dump autoloader in all compser scripts
  remove script part of composer.json file
  fix typo
  add some information for OSX requirements
  No alert bloc
  default country
  Autofocus on username field for better use
  Beautiful login page
  feed loop is now countable
  Change error page design
  Add validation button on form
  - Edit country view creation - Delete and edit modalbox creation - Countries routes management
  ...
Working : Updating model schema.xml