stop displaying DAS tracks for data objects without IDs
stop displaying DAS tracks for data objects without IDs

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