Add organization and location to foreman.

This feature allows foreman to provide multi location, multi tenant and
multi organizations capablities.

the idea is that resources within foreman (e.g. hosts, subnets, users,
environments etc) can belong to one or more locations and organization,...

fixes #1028 - show and override puppet class parameters in the host form.

fix minor css classes declaration.

fixes #832 - adds parameterized class support

Credits:
This patch is based on the original work of Olivier Favre
<olivier@yakaz.com> many many thanks!

• import class parameters, and try to understand their types
• support a complex matrix of environments, puppet classes and their...

[UI] Fixed inconsistent tab naming for the initially active tab

[SQL optimizations] - many small optimizations

• Bookmarks have only users, not usergroups
• added caching to the settings table
• removed notice message lookups (we are not really using those)...

fixes #1165 add inherited params display and override option to the host form.

Signed-off-by: Ohad Levy <ohadlevy@gmail.com>

fixes #1649 Puppet class and environment import works only on the first smart-proxy

fixes #1697 - hostgroup class listing showed all classes regardless of environment

added classes-filter to the puppet classes selection page. fixed the selected classes sort.

also fixes #1675