Add tests for part of the classes for authenticating via LDAP

Not all features are tested, but the biggest method from LdapAuthenticatable
is tested. The other things that should be tested are already there as pending
tests.

refs #246
Removing old config files for nginx

Mconf-Web can still be used with nginx, but the documentation for it is not
maintained anymore, so we don't need these example files.
Remove .bundle/config

Was created to fix errors with ruby-debug19 and rvm, but we don't use rvm
anymore. If needed, this should be a configuration in the server, not something
default in the application's repository.
Fix possible failure on a migration
Remove passenger from the Gemfile

It doesn't need to be in the gemfile, it is installed manually as part of the
setup of a production server.
Fix the name of the script to start resque

Script added by 1ff219e1813fb

refs #370
Update logrotate's config file

The log files changed since we replaced god by monit.

refs #370
Merge remote-tracking branch 'upstream/branch-v2' into branch-v2