Order builds by number::int DESC by default (#934)
Order builds by number::int DESC by default (#934)

After we import the build history from .org to .com we may end up with
id and created_at fields out of sync with numbers. Historically a lower
created_at or id values where always also lower number values. After the
import it's no longer true. That's why we want to change the default
sort value
travis-ci/travis-api,travis-ci/travis-api,travis-ci/travis-api