Added tests for fetch_factors_coded_for_by_gene() and fetch_factors_coded_for_by_transcript()
Added tests for fetch_factors_coded_for_by_gene() and fetch_factors_coded_for_by_transcript()

at7/ensembl,muffato/ensembl,at7/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,danstaines/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,muffato/ensembl,muffato/ensembl,danstaines/ensembl,mjg17/ensembl,willmclaren/ensembl,danstaines/ensembl,muffato/ensembl,mjg17/ensembl,willmclaren/ensembl,at7/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,at7/ensembl,Ensembl/ensembl,mjg17/ensembl,james-monkeyshines/ensembl