Add Validation to training

Add validation folder to runtraining

PreprocessValidation.m ~/validationimages ~/validationlabels ~/validationdata
runtraining.sh --validation_dir ~/validationdata/ --numiterations 50000 ~/augmentedtraining/ ~/trained_network

Plot loss and accuracy

Run PlotValidation on the log folder of each model

PlotValidation.m ~/trained_network/1fm/log

This will create plots of loss and accuracy and save them as .pdf in the same log folder.