First commit of federated horizon with IdP/Mapping interfaces
Merge branch 'federated' of http://github.com/kwss/horizon into federated

Conflicts:
	horizon/templates/auth/_login.html
	horizon/templates/horizon/common/_fed_form_fields.html
	horizon/templates/horizon/common/_fed_projects_form.html
	openstack_dashboard/dashboards/identity/identity_providers/views.py
	openstack_dashboard/dashboards/identity/mappings/views.py