We should visually differentiate the protected MongoDB namespaces in the list of databases in Compass and Data Explorer. We do not need to hide them, but we should make it obvious why these databases appear empty if a user does not have the right privileges to view their contents. 

Rationale: 

With the release of the new Data Explorer, TSEs and users have been confused by the new appearance of local, config, and admin namespaces in the DE interface. No users in DE possess the atlasAdmin db user privileges, so no users will ever see the contents of the local and config databases (admin is still hidden for these users). For reference, here is the data access admin privilege config in mms: https://github.com/10gen/mms/blob/9ef1609c92352f4dd4fb283bc76beff80b926bd4/server/[…]nds/project/_public/model/dbusers/AtlasDataAccessAdminRole.java

This feedback likely resonates with Compass users too who do not have the right privileges to view the contents of these protected namespaces.