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 #1957 - remove old libvirt hypervisors code

Since foreman 1.0 libvirt hypervisors are now part of compute resources
this patch removes the old code and migrate any existing hypervisors to
be libvirt based compute resources.

fix minor css classes declaration.

fixes #1849 - Add the current hostgroup name when editing

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

fixes #1664 hostgroup-selected for edit host is broken.

adds ec2 provisioning support fixes #1223

- added progress bar for instance creation
- minor fixes for certname based deployments
- added ssh provisioning support to orchestartion, which utilize finish
scripts by default
- added images support (part of the vm compute tab)...

updates UI to bootstrap v2

fixes #1503 - When creating a host, it should be possible to define a Puppet CA and a Puppet Master to use

fixes #1411 - hostgroup ajax actions are mostly broken