This improves and fixes some issues with the quota management
dashboard when quota management is disabled in a region
(either partially or fully).
* Ensure the Region Quota Details and Quota Size Details pages
do not return an error when viewing regions that have
quota management disabled.
* On the Quota Size Details page, if quotas for a resource are not
managed in a region, set `-` for the current quota, usage and
percentage values, instead of hiding the table row entirely.
* Make the title formatting nicer for the Region Quota Details and
Quota Size Details pages.
Change-Id: I1ed74ba6bde647c9184f58278474cbc1cc80e289
bab31ad14d