Docs: Fine-grained access control refactor (#47536)

* fleshing out About topic

* docs, fgac refactor initial draft

* updated FGAC with service account details

* finalized restructure

* make prettier, corrects spelling

* fixes typo

* adds rollout strategy topic

* started name change

* renamed to rbac throughout docs

* copy edit to about and actions and scopes docs

* finishes content reorg

* draft of refactored refactored docs

* corrects relrefs

* formatting tweaks

* fixes typo

* copy updates to about rbac

* rbac rollout docs edits

* update rbac role assignment docs

* content update to manage rbac roles doc

* sort and reorder roles reference in rbac docs

* alphabetize permissions table

* Update docs/sources/enterprise/settings-updates.md

Co-authored-by: Mitch Seaman <mjseaman@users.noreply.github.com>

* incorporates feedback, makes prettier

* update http api references in rbac docs

* fix broken refs and improve wording on enabling RBAC provisioning

Co-authored-by: eleijonmarck <eric.leijonmarck@gmail.com>
Co-authored-by: Mitchel Seaman <mitchel.seaman@gmail.com>
Co-authored-by: Mitch Seaman <mjseaman@users.noreply.github.com>

docs/sources/administration/view-server/view-server-stats.md

@@ -7,7 +7,7 @@ weight = 400
 
 # View Grafana server stats
 
-> Refer to [Fine-grained access control]({{< relref "../../enterprise/access-control/_index.md" >}}) in Grafana Enterprise to understand how you can control access with fine-grained permissions.
+> Refer to [Role-based access control]({{< relref "../../enterprise/access-control/_index.md" >}}) in Grafana Enterprise to understand how you can control access with RBAC permissions.
 
 If you are a Grafana server admin, then you can view useful statistics about your Grafana server in the Stats & Licensing tab.