Spring semester update 6

[akzysk]

Added a button to add Samples to a test set, test.arff. Required some generalization in SamplesController to allow the user to easily add Samples to either training.arff or test.arff.

Ran a quick test externally in Weka with training.arff and test.arff. Results were not accurate (as expected), need to change attributes and create some filtering techniques for pre-processing. Looking critically at Thresholding process as well as Attribution.

Implemented meanR, meanG, and meanB attributes to Segments on both the services side and the DB side.