bug fixed in affinity data provider
FoVs of the ConvNet
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/front_end/data_provider/sample.hpp
	src/front_end/data_provider/transformer/affinity_transformer.hpp
	src/front_end/data_provider/volume_data_provider.hpp
[not tested] boundary mirroring
bug fixed in box.hpp