adding and using annDescription to GENccEnrichResult
added annDescription to the "[" accessor of GENccEnrichResult
added function .genPieSig for actually generating a string telling us which list was significant.
actually use pieSig to set the listMembership slot, and move setting the tooltip into the general code as the last thing
missed a comma in variousAccessors
Merge branch 'paperRev' of https://github.com/rmflight/categoryCompare into paperRev
added a function to generate a legend in a plot for reference for the user
forgot to return the value