Comment 1 for bug 1508186

Just discussed this with Steve & Lukasz and made some decisions:

* The bileto API should have a GET parameter that specifies a minimum row id, so that bileto doesn't send old rows to snakefruit for publishing.

* Bileto should also only return records that are not known to be fully migrated, in the event that snakefruit dies and is redeployed and we lose the local state of the most recent published id.