First implementation of the transfer labels functionality
Not tested in workflow yet
merge master
incorporate label transfering, add a warning to thresholding applet
merge branch transferLabels
Merge pull request #281 from ukoethe/master

added --debug command line argument
ilastik.py: Replace print statement with logging statement.
GUI does not block during object feature prediction.

closes issues #194 and #238.
object feature calculation can be cancelled
no need to clutter gui class namespace with extra functions
unnecessary argument
clickable text in feature selection was a bad idea
Removed the empty QWidget which covered the z-spinbox
extend transfer labels to return ambiguous cases
Merge pull request #284 from christophdecker/fix_x_spinbox

Removed the empty QWidget which covered the z-spinbox (fixes #115)
correct return value in transferLabels function
fixed more backslash issues in filenames