Rename ConversionFormatsParser -> ExtractConversionFormat
Pull job processing into service object for clarity
Introduce strong params
Minor naming changes
Add metadata json property to `Job` model
Serialize job using an actual serializer
Job becomes stateful
[WIP] — simplify conversion worker; misc cleanup
Stop using `Job#jid` to check job progress and instead use `Job#state`
Remove unused Job `completed` state
Remove unnecessary sidekiq requirements
Perform callback after conversion
hound
Merge pull request #26 from Tahi-project/refactor-callbacks

Refactor callbacks