This adds a field to the email if there is an error on batchUpdate. This
field contains all the attempted operations. So the last item in the
list would be the operation that we encountered the error at. @lefnire,
mind taking a look at this and pushing if you feel comfortable with
adding more to the emails?
find out if some of these errors are mobile / not my own apps. Some
requests are malformed, but hitting apiv2's batch-api, i don't see how
this could be happening since both web and mobile are built to use apiv2
properly, unless a 3rd-party is trying to use apiv2 batch-api, but that
seems unlikely