Add aws-ses back in for the sync error emails.

These emails have more debugging information than errbit, we track the
last few sql queries and the data in the importer which helps when debugging issues

This is extra information in addition to errbit, not replacing it.
Fix spec failure due to not setting dates correctly

We are relying on the dates in the factory which are not relative the
dates in the spec, and they are now failing.

We need to review all specs with dates to ensure that factory objects
have dates set explicitly.
Retry downloading update if update file is missing

When Tariff runs in multiserver environment one server may have
downloaded the update and marked as pending. If other server tries to
apply it, it won't find the file. Therefore we try to redownload if file
is missing.