Fixed CAS attributes for jasig compatibility

Boxed the attributes into <cas:attributes> element and
made attribute keys namespace aware. This is tested
with jasig java client 3.3-SNAPSHOT and rails
devise_cas_authenticatable version 1.1.4.
make a username_postfix in config available for ldap authenticator
typo fixed: should be 'username_postfix'
Remove Gemfile.lock

Very good explanation why we should not have it:
http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/
Initial working configuration with postgres, and without SSL.
configuration for deployment with capistrano
Added once again the gem.lock file
Update rb-inotify dependency.