Don't trigger audits for archived packages

Summary:
Ref T10939. This is just a bug. I thought this was what was described in T10174 but that's actually talking about something completely different.

Also make a <select /> slightly easier to use.

Test Plan:

• Created a package with auditing enabled.
• Pushed a change.
• Saw audit trigger.
• Disabled the package, pushed a change.
  • Before patch: saw audit trigger improperly.
  • After patch: restarted daemons, then saw audit correctly not trigger.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10939

Differential Revision: https://secure.phabricator.com/D15907