amira-denoising: use a different OrthoSlice for each volume
amira-denoising: add special version for clustered volumes
clustering: remove 's' after 'iter' in name of output volumes
amira-denoising: do not set a fixed layout for the montage
amira-denoising: rename code to generate mosaic on NLM result images
amira-denoising: add code to generate mosaic from clustering result images