Fixed disambiguation for STAR alignments
Merge pull request #318 from mjafin/master

Fixed disambiguation for STAR alignments
v0.7.7 release. Final commit includes pointers to latest conda version of pysam + makes pandas an optional soft import in feature counts
Provide 0.7.7 conda package of bcbio-nextgen. Update Dockerfile to match latest security fixes in bcbio-nextgen-vm