Update mysql.template to work with CentOS 6.4

The Fedora image is broken (repomd.xml error).
remove connection logging
Update wordpress-multi.template to work with CentOS 6.4
Update ruby-on-rails.template to work with CentOS 6.4
Update php-app.template to work with CentOS 6.4
Update RoR template to Fedora 18

Conflicts:
	ruby-on-rails.template
Update RoR template to Fedora 19
Remove RoR from catalog.
Merge branch 'qa' into staging