added indexes in bak tables
added indexes in bak tables

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