evalGeneSets: Evaluate multiple gene sets
In labsyspharm/DRIAD: Drug Repurposing In Alzheimer's Disease

Evaluates multiple gene sets after matching them up against a given dataset

1	evalGeneSets(lGSI, XY, lP, nBK = 0, method = "lgr", rs = 100)

`lGSI`	list of character vectors, each encapsulating a gene set of interest (GSI)
`XY`	dataset, as loaded by prepareTask()
`lP`	list of pairs for cross-validation, as generated by preparePairs()
`nBK`	number of background sets to generate for each GSI
`method`	one of "lgr", "svm, xgb", "nn" for logistics regression, support vector machines, xgboost and neural nets, respectively
`rs`	random seed to allow for reproducibility