Replace .rvmrc file by .ruby-version.
Update rails and sass-rails gems.
Upgrade will_paginate gem.
Update development gems (coveralls and simplecov).
Update all missing gems except capistrano.
Remove duplicate gem in gemfile.
Fix bug with S3 SSL certificate verification failing with dot in bucket name.
Upgrade to capistrano 3.
Upgrade Rspec to latest version.
Update newrelic gem.
Update a bunch of gems.
Fix tests for interventions stats.
Remove useless 503 error page.
Bump year.
Set enforce_available_locales for i18n to avoid deprecation warning.
Merge branch 'refs/heads/github.master' into github.permissions