added regression test: gene end was not always correctly set by recalculate coordinates
added regression test: gene end was not always correctly set by recalculate coordinates

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