Created by: tgrego
This is a copy of https://github.com/Ensembl/ensembl/pull/458 against master.
Describe the problem. Please provide an example representing the motivation behind the need for having these changes in place.
If applicable, describe the advantages the changes will have.
If applicable, describe any possible undesirable consequence of the changes.
Have you added/modified unit tests to test the changes?
If so, do the tests pass/fail?
Have you run the entire test suite and no regression was detected?