Pick some preset build statuses

Summary:
We're picking three useful groups of build statuses to provide as default queries:

• Stuff not yet building
• Stuff building
• Stuff which has finished building

These are reasonable buckets for builds since (unlike most objects in phabricatorland) users are generally waiting impatiently for the machine to do something for them, rather than being responsible for doing something with the machine.

Test Plan: clicked around the search engine and enjoyed my defaults

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D16349