UPDATE The Access Control pages to reflect the scoping to a defined bucket, scope or collection.

UPDATE The Access Control pages will need to change to reflect the scoping to a defined bucket, scope or collection. 

This impacts existing pages such as:

• Sync function
• Users and User Authentication
• Roles
• Channels (including the behavior of system channels with collections)
• Import filters

Include content/EXAMPLE from Users and Sync Gateway Roles in https://docs.google.com/document/d/1JEeAn_BO6ZbsIhOlT4WpRj3xwJnCot606nZZuG0_CLY/edit#heading=h.28u6tvf51t2k

This relates to https://docs.couchbase.com/sync-gateway/current/access-control-concepts.html and the sub-pages in that nav