fixed several bugs in refactored DBEntryAdaptor
fixed several bugs in refactored DBEntryAdaptor

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