Filter errors

[jimk-bdrc]

Capture errors and warnings. First, look at verbose bb-console.txt logs, Try to parse the error line into

• the text that captures the error
• the work which contains the error.

It's assumed that, if we have the work, we can just re-run a batch of one to trap the error more specifically

[jimk-bdrc]

With commit 1055bab, merged in Python code for filtering errors. Any further error filtering will have an individual issue. (including specifics of multi page tiffs)