Correct ensembl export
Correct ensembl export

We have to use the correct variable for the number of ensembl forks.
Additionally, I tend to separate out the query from processing step as I
have found that the queries are often much faster and so this way we can
have as many processes running as possible.

RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline,RNAcentral/rnacentral-import-pipeline