added drupal git clone into ./drupal and symlinked it to public_html
Working version.
 Changes to be committed:
	deleted:    public_html
	modified:   puppet/manifests/base.pp
	modified:   puppet/modules/apache2/manifests/init.pp
	new file:   puppet/modules/drupal/manifests/init.pp
	modified:   puppet/modules/php5/manifests/init.pp