set empty list for indices not produced to avoid error Tile has no attribute 'ndvi'(if ndvi was never computed)

added the possibility to compute CM001, CM002 and CM004 cloud masks if L2A is missing and cloud probability and / or scene classification is present in cloud mask folder. CM003 still needs L2A B11 and cannot be computed

Jobs: removed duplicates from process lists, indices: removed *.tif.aux.xml while removing raw tiff files, put indice names to lower in places for compatibility