Better handling of profile timestamps.

With some added logging and general timestamp handling functions.

Avoid schema-contrib version conflict.
Merge pull request #255 from MastodonC/feature/fix-entity-csv-upload

Better handling of profile timestamps.
Fix display of images from s3 buckets.
let alignment.
remove debug logging.
use 'our' s3 bucket rather than old embed.
Updated photo migration for hecuba changes.
Tone down logging of stacktraces for parsing errors.
Make entities/update more robust.
Photo migration works.

Currently we delete the photos and migrate the ones where we actually
have the image.

TODO - Need to keep refs to non-existant images.