streamline name of databases and fix tests

bob/pad/face/config/casia_fasd.py

bob/pad/face/config/casia_surf.py

bob/pad/face/config/casiasurf.py

bob/pad/face/config/deep_pix_bis.py

bob/pad/face/config/mask_attack.py

bob/pad/face/config/oulu_npu.py

bob/pad/face/config/replay_attack.py

bob/pad/face/config/replay_mobile.py

bob/pad/face/database/__init__.py

bob/pad/face/database/casia_fasd.py

bob/pad/face/database/casia_surf.py

bob/pad/face/database/mask_attack.py

bob/pad/face/database/oulu_npu.py

bob/pad/face/database/replay_attack.py

bob/pad/face/database/replay_mobile.py

bob/pad/face/deep_pix_bis.py

bob/pad/face/test/test_databases.py

doc/baselines.rst

doc/resources.rst

setup.py