option to specify a stage when generating eng seq params
v0.185

    Added Crispr ES QC
Merge branch 'crispr_qc' of github.com:htgt/LIMS2-WebApp into crispr_qc
Removed setting of SIG{CHLD} before forking as it was breaking exonerate.
Merge branch 'crispr_qc' into devel
Merge branch 'devel'
    Bugfix: Exonerate would always fail on crispr ES QC due to SIG{CHLD}