Now reload_data checks that the file is corrent and is not corrupted.

Also added a method to clear all saved data.
Added default getters and setters and tooltips to the mainWindow
Implemented controllers to load data and basic output information in the training process
Deleted TrainController
Added train controller
Created train controller as a SwingWorker
Added getters and setters to progressBar, also added two new methods to enable and disable all buttons
Updated spreadOut to use bias when is active
Activated use of bias