Fixes #2270 - Detect all OpenStack IPs and test which allows SSH

fixes #3912 - add inheritance for locations / organizations

fixes #4125 [Openstack] - host with auto assigned IPs can't be deleted

fixes #3567 Editing an oVirt compute resource can throw errors loading quotas while loading page

fixes #3307 - add troubleshooting to console page

fixes #4333 - added multi-select-rails gem

fixes #3939 - add option to 'inherit from parent' for hostgroup attributes

fixes #4268 - don't search for host with nil IP on hostname spoofing

Fixes #4221: add :dependent => :destroy for compute profiles on compute resource

fixes #3845 - user login session ending clears chosen organization