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 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"...

• Added checkbox for enabling and disabling hosts from edit screen
• Enabling e-mail reports for hosts in downtime
• Added dashboard links to disabled hosts
• Added basic tests

Fixes #145 - Added AuthSourceInternal

Added a password setting facility to the user class for AuthSourceInternal
Switched to SHA1
Changed :ldap to :login
Applied numerous fixes from Ohad Levy
Fixed malformed user page
Switched attr_accessible to attr_protected...

Fixes #260 - Switch to using STI for OS families

Fixes #261 - parameters now use a single reference_id

This implementation uses STI but the table looks the same for all
variants. This is a little strange but it seems to work.

Also removed obsolete controllers and tests
Added more tests

fixes #297 - Prevent operatingsystem.minor from storing NULLs

fixes #290 - migration will fail if facter domain returns on value

fixes #280 - sample data should include newer operating systems

migration might fail if medium does not have an opeartingsystem - refs #236