Optimize initial setup by using submodules

.gitignore

.gitmodules

plugins/jiffybox

plugins/serverdensity

roles/apache

roles/aptproxy

roles/common

roles/commonauth

roles/compass

roles/composer

roles/drupal

roles/drush

roles/gitlab

roles/haproxy

roles/mysql

roles/mysql-client

roles/nodejs

roles/openphoto

roles/oracle

roles/owncloud