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