refactor and removed sex ident

algorithm/DEMO_estimate_gender.py

algorithm/ToolsDemos/DEMO_straightening.py

algorithm/ToolsDemos/convert_images.py

algorithm/ToolsDemos/dlc_create_training_dataset.py

algorithm/ToolsDemos/dlc_launch_gui.py

algorithm/ToolsDemos/dlc_train_model.py

algorithm/ToolsDemos/tf_find_gpu.py

algorithm/constants.py

algorithm/dsift.py

algorithm/estimate_gender.py

algorithm/imageprocessing.py

algorithm/predict_salamander_abdomen.py

algorithm/segmentation.py

algorithm/straighten_with_dlc.py