added IKMC for mouse and removed the array type sources no longer used and tidied up a bit
added IKMC for mouse and removed the array type sources no longer used and tidied up a bit

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