fixes #415 - Operating systems debian types were always shown

Added support for Debian-based distributions for automatically populating TFTP directory.

Fixes #178 and Fixes #24 - Automate populating the TFTP directory

This implementation is only for the Red Hat family, other OS's should follow
It implements a way to query foreman and gets the required boot files (i.e. kernel and initrd) files
from a predefine media over JSON....

Fixes #405 and Fixes #349 - Adds support to 2.6.x reports

NOTE: Its recommended to Backup your DB prior to using this patch.

Added JSON API Support to the Partition Table controller

added JSON API Support to the Domains Controller

Added a basic notice facility to foreman

Notice.create :message => "text", :level => level, :global => boolean
if global is true then any user can cancel that message for all users
else each user must cancel the message individually

level can be "warning" or "message"...

fixes #369 - broken links on email reports

Fixes #399 - add Red Hat Network registration snippet

Fixes #390 - A user account is always associated with a session