Fixes #266 - Migrate the (NFS-) paths of existing Installation Media to URI format.

fixes #236 - Installation media are now usable with more than one operating system.

Fixes #265 - improved preseed template and more complicated partitioning scheme for Debian-based distributions.

fixes typo in migration, refs #170

Fixes #170 - implement usergroups

Added migration
Added tests
Added MVC files
Added the routes as well
Added the program logic and additional views
Added RESTful actions for update and create
Added validations to ensure that usergroup.name and user.login do not collide...

Fixes #13 - Manage Debian family release-name

Fixes #177 - Family concept

It will_paginate and handle searches
Added family support to Operatingsystem
More work will be needed to add family support to host manipulation.

fixes #189 - Fact filter should be case sensitive

fixes #141 - add support to extlookup kind of queries through foreman
usage:
wget -q -O - "http://foreman/lookup?key=ntpserver&order[]=my.domain&order[]=common"
if you want it in YAML, just add:
wget -q -O - "http://foreman/lookup?key=ntpserver&order[]=my.domain&order[]=common&format=yml"

fixes #156 - reports will fail if its longer than 64kb