Merge branch 'staging' into issue0038

model_server/base/accessors.py

model_server/base/roiset.py

model_server/clients/ilastik_map_objects.py

model_server/extensions/ilastik/models.py

model_server/extensions/ilastik/router.py

model_server/extensions/ilastik/tests/test_ilastik.py

model_server/scripts/correct_ilastik_abspath.py

model_server/scripts/verify_multichannel_ilastik_inputs.py

tests/test_roiset.py