dataset-viewer

16f39960 - Retry JobManagerCrashedError and limit a certain number of retries (#2221)

Retry JobManagerCrashedError and limit a certain number of retries (#2221) * add attempts field * fix worker style * Remove difficulty increase * add tests * fix style * adding migrations for new fields * removing attempts from job collection * set attempts if previous job exists * rename new field to "retries" * apply code review suggestions * fix style