Log request info in Errbit for Prayer Letters sync errors

Steve from PrayerLetters.com noticed a 404 Bad Request error coming from my personal prayer letters sync due to a contact not having a name or company specified (and the error is showing up in Errbit). After trying to reproduce the error locally and looking at an export, I think it would be helpful to get more information about the error.

This change will track the failing request body via the AirBrake parameters info so I can see it in Errbit to debug it better.