Merge branch '35-remove-dead-code-and-cleanup' into 'master'

.gitignore

algorithm/DEMO_estimate_gender.py

algorithm/DEMO_straightening.py

algorithm/SalamanderImage.py

algorithm/brute_force_matching.py

algorithm/constants.py

algorithm/convert_images.py

algorithm/dlc_create_training_dataset.py

algorithm/dlc_launch_gui.py

algorithm/dlc_train_model.py

algorithm/dsift.py

algorithm/estimate_gender.py

algorithm/imageprocessing.py

algorithm/main_src/Salamander.py

algorithm/main_src/contour.py

algorithm/main_src/cropping.js

algorithm/main_src/database.py

algorithm/main_src/main.py

algorithm/main_src/matching.py

algorithm/main_src/posedatareader.py