Added BATL DB config returning RGB-NIR-D data, moved all batl db configs to one folder

bob/pad/face/config/database/__init__.py

bob/pad/face/config/database/batl/__init__.py

bob/pad/face/config/database/batl/batl_db.py

bob/pad/face/config/database/batl/batl_db_depth.py

bob/pad/face/config/database/batl/batl_db_infrared.py

...d/face/config/database/batl/batl_db_rgb_ir_d_grandtest.py

bob/pad/face/config/database/batl/batl_db_thermal.py

setup.py