* Beginning to work on the role management APIs. Added docs for GET
* Adding PUT docs
* Adding PUT details
* Adding delete docs
* Fixing linking
* Adding Kibana privileges section
* Fixing dashboard only mode docs
* Fixing a few more references to managing roles
* Beginning to work on authorization docs, might be moving some to
stack-docs
* Collapsing authorization description in the kibana privileges page
* Adding audit logging section
* Revising the language on the Kibana role management section
* Splitting back out the auth/privileges and adding legacy fallback
details
* Revising language around impact of disabling security
* Changing Kibana to {kib} and Elasticsearch to {es}
* Beginning to work on developer centric docs
* Fixing some formatting, adding some diagrams
* Adding note about the role management APIs
* Adding overview, fixing small syntax issues
* Fixing chunk name for transitioning to application privileges
* Adjusting tone for the authorization introduction
* Changing the tone and structure of the RBAC docs
* Deleting blog stuff after refactoring
* Addressing first round of peer review comments
* Fixing endpoints links
* Peer review suggested edits
* Addressing other PR feedback
