* Copied the register action's chunk of code used to setup the account
  based on Setting.self_registration
* Extracted method for when onthefly_creation_failed
* Added tests to confirm the behavior

  #699

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2446 e93f8b46-1217-0410-a6f0-8f06a7374b81