added load/write serde methods to HiddenLayer
added a default randnumgen value in the hidden layer ctor
added unit test for TestHiddenLayerSerde
added load/write serde methods to DL's LogisticRegression Layer
added elementwiseSame matrix comparison method plus unit test to MatrixUtils
finished and tested logistic regression layer unit test for DL
removed unneeded unit test file
rebuilt the Hidden Layer unit test for serde
removed older hidden layer unit test file
marked both the older LogisticRegressionLayer and OutputLayer classes for DBNs as deprecated
implmented serde methods for the non deprecated current version of DL Logistic Regression
implemented unit test for DL version of Logistic Regression, the non deprecated one
added base serde methods for LogisticRegressionGradient
added base serde methods for NeuralNetworkGradient serde
implemented serde for RBMs
added full RBM serde methods and unit tests
first pass at serde methods for DBNs