Fix test_top_consumers_recent
Fix test_top_consumers_recent

This commit fixes the test test_top_consumers_recent in
caffeine.tests.test_models.CaffeineManagerTest by making the query
result of the used top_consumers_recent method more deterministic by
ordering with the user_id in case of same total values.

coffeestats/coffeestats-django,coffeestats/coffeestats-django,coffeestats/coffeestats-django,coffeestats/coffeestats-django