Add cloud tenant detail page
Add cloud tenant detail page

* add CloudTenantController#show
* add show and _main views for cloud tenant
* add listnav layouts
* add panel_control route for cloud_tenant
* add summary view helpers
(transferred from ManageIQ/manageiq@a921be2898f738f9b5bfdb96da8626505e1ba249)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic