[security] Tree toggle expand just on icon
[security] Improved tree UX
[security] Support for temporary use of unlisted users/groups in the select
[security] Enable loading of non standard users/groups on the initial select dropdown
[security] Replace drop_sentry_privilege by alter_sentry_role_revoke_privilege

Still not working apparently though
Merge remote-tracking branch 'remotes/origin/sentry' into sentry