Renamed locale fre => fra, since 2.3 CakePHP uses ISO standard.
Refs https://github.com/CakeDC/users/pull/146
Refs https://github.com/CakeDC/users/issues/145, fixing the links in the sidebar when not used from the plugin
Minor improvement to the flash message that shows the username in the UsersController.php
Fixed some linting issues.
File linting and function docs
Merge branch 'linting'