[NEXUS-6808] Change id to userId (to match validation code)
[NEXUS-6807] Validate user email using emailer Address
Merge remote-tracking branch 'origin/master' into user-ui-fixes
[NEXUS-6825] Make external users read-only

= Cannot be updated/deleted/password changed/reset
[NEXUS-6825] Make external users read-only
[NX-703] External user roles mapping
[NX-703] Avoid email validation for external user
Merge remote-tracking branch 'origin/master' into user-ui-fixes
Merge pull request #708 from sonatype/user-ui-fixes

REVIEW: User ui fixes