updated module imageprocessing
bugfix: ends on same slice with different direction had same hash
added segment hash output to StructuredProblemWriter
added --headless option to sopnet.cpp

running sopnet headless allows to run it via ssh and with much less memory consumption
changed minimalImpactTED-pipeline to read gold standard from labels.txt (using segment hashes)
added writing of segment hashes to MinimalImpactTEDWriter