Added fail-safe checks for get_current_folder() calls with gtk.FileChooserDialog instances
Changes to SelectROI.py: default machine value now set to UNKNOWN, added confirmation dialog on save, added exit option on save
Changes to SelectROI.py: added overwrite confirmation, linked "cancel" event to fc.destroy() for OnSave() calls
Added comments for clarity
cleaner exits to avoid generating error messages
merge
fixed TrainNetwork.py load data error
Merge pull request #2 from myedibleenso/master

Several updates to Select_ROI.py