netDx nestedCV predictor wish list

[shraddhapai]

• should store num interactions in nets that are: 1) input for cross-validation in a given round (can just do first) 2) input for test classification (ie include train+test)
• should have a function which converts the all caps pathway names back to the nicely-formatted names in the GMT file.
• getFeatureScores() should have a verbose option to turn off all messages.
• plotEnrichmentMap should have networkDensity input param that controls the density of the EMap using 5 settings in the latest EM app (sparser, denser, etc.,)
• writePSN_NamedMatrix() - deal with incompatible param choice issue. Pearson corr removing NA when writeProfiles=FALSE.