Specify queue serializer when creating Django RQ queue

[sophcass]

Related to this issue: #626

We want to be able to add the serializer when creating the Django RQ queue. This serializer should then automatically be used when fetching the jobs so that we do not get DeserializationError in the Django RQ dashboard.

[sophcass]

Without setting the correct serializer when fetching the job, an Unpickling/Deserialization Error appears in place of the information. See here:

This is what the job details page looks like now that the correct serializer is being used:

[selwin]

Thanks!

[sophcass]

@selwin can we get create a release for the couple of changes that have been merged recently?

[selwin]

Yes, will try to cut a release sometime in the next few days.