cache VariationFeatures before fetching TranscriptVariations so we don't have to do one DB fetch per TV
hack for a data bug in the variation DB where the somatic status doesnt match between tables
we only want TVs in the coding sequence and hence the protein
update test and test data for overlap/translation endpoint
Merge pull request #32 from willmclaren/master

Cache VariationFeatures before fetching TranscriptVariations. Big performance improvement.