Add config value

Remove max_user_domains/impl, use capability for API value

Remove max_domains from capabilities stanza in API (like 'max_gears'), update tests

Add max_domain capability to oo-admin-ctl-usr

Update broker.conf file
Add ability to delete domains from the UI
Add tests for domain delete in UI
Finish implementing oo-admin-ctl-user --setmaxdomains
Merge pull request #3972 from liggitt/bug_1020009_max_domains_capability

Merged by openshift-bot