Updated store method to set stable id version to 1 if it's undefined.
Updated store method to set stable id version to 1 if it's undefined.

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