Work items:
- The "Project/Rating" tab has been improved: it does now provide a total
by metric type. This make use of the /summary endpoint instead of /total
(/total is deprecated).
- An "Admin/Rating Summary" tab has been added. An admin user can now have
the cost of every rated tenant at once. By clicking on a tenant, a
per-resource total for the given tenant can be obtained (this view is
similar to the "Project/Rating" tab). A per-resource total for the whole
cloud is also available.
Change-Id: I13b9ba9e04a330ec216378258ad024c8651f6ff5