[bob] Lowercase all new datasets (CXR)

bob/ip/binseg/configs/datasets/JSRT/__init__.py

bob/ip/binseg/configs/datasets/JSRT/default.py

bob/ip/binseg/configs/datasets/JSRT/xtest.py

bob/ip/binseg/configs/datasets/MC/xtest.py

bob/ip/binseg/configs/datasets/Shenzhen/__init__.py

bob/ip/binseg/configs/datasets/Shenzhen/default.py

bob/ip/binseg/configs/datasets/Shenzhen/default_256.py

bob/ip/binseg/configs/datasets/Shenzhen/xtest.py

bob/ip/binseg/configs/datasets/montgomery/__init__.py

bob/ip/binseg/configs/datasets/montgomery/default.py

bob/ip/binseg/configs/datasets/montgomery/xtest.py

bob/ip/binseg/data/JSRT/__init__.py

bob/ip/binseg/data/Shenzhen/__init__.py

bob/ip/binseg/data/montgomery/__init__.py

bob/ip/binseg/data/montgomery/default.json

bob/ip/binseg/test/test_jsrt.py

bob/ip/binseg/test/test_mc.py

bob/ip/binseg/test/test_shenzhen.py