switch basebox to ubuntu/trusty64
adapt apache cookbook to apache 2.4
LockFile and mod_authz_default obsolete

FIXME: see if upstream fixes cookbook
trusty has a new conf-enabled structure
default docroot is /var/www/html in trusty
no generic /etc/php5/conf.d is created by default in trusty

#FIXME: is php actually looking there?
allowoverride all on on all sites for clean url support
remove authz_defaul as it don't exist anymore
don't disable authz_user required by phpmyadmin