Switching from HGNC to EntrezID

[amyecampbell]

once updated pipeline is working, we should switch feature names to be EntrezIDs. Currently, CuratedOvarianData deals with non-specific probe sets (probes that map to multiple genes) by including all possible genes separated by ///. For now, we are dropping these examples when we include AACES. One concern, however, is that some single HGNC gene names in the CuratedOvarian and Mayo sets are different aliases of HTA HGNC names in AACES. Mapping to EntrezIDs would likely provide more complete mapping, and therefore a greater number of common genes between the 6 datasets.