added IPI,CCDS, PUBMED and MEDLINE external databases
added IPI,CCDS, PUBMED and MEDLINE external databases

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