it now tries to merge the pData from GatingSet with external meta data. The pData of gatingSet has to contain at least one column:'name',which is FCS filename.

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/QUALIFIER@73501 bc3139a8-67e5-0310-9ffc-ced21a209358
fix bwplot issue with / symbol in the colnames. #30
Merge commit '7ed5c81aed1cdf4e24140fa01a82234609252150' into trunk
merge from github
skip the groupoutlier detection if no grouping variable is defined. close #34