The plaintext protocol TCP should not return 'accepted' if things fail

[dougthor42]

Right now you can send in some TCP data via the plaintext protocol and it'll say accepted, even if there was an error.

At the very least it should be more specific saying something like "the TCP request was acknowledged and accepted. The data may still error out when adding."

This would not really be an issue if I refactor how the DB interaction is done (have the celery worker talk to the DB instead of Flask doing so).