Merge branch 'arface' into 'master'

bob/bio/face/config/database/arface.py

bob/bio/face/config/database/arface_all.py

bob/bio/face/config/database/arface_expression.py

bob/bio/face/config/database/arface_illumination.py

bob/bio/face/config/database/arface_occlusion.py

...face/config/database/arface_occlusion_and_illumination.py

bob/bio/face/config/database/caspeal_accessory.py

bob/bio/face/config/database/caspeal_aging.py

bob/bio/face/config/database/caspeal_background.py

bob/bio/face/config/database/caspeal_distance.py

bob/bio/face/config/database/caspeal_expression.py

bob/bio/face/config/database/caspeal_lighting.py

bob/bio/face/database/__init__.py

bob/bio/face/database/arface.py

bob/bio/face/database/caspeal.py

bob/bio/face/test/test_databases.py

doc/implemented.rst

setup.py