Merge branch 'updates' into 'master'

bob/learn/tensorflow/network/InceptionResnetV2.py

bob/learn/tensorflow/script/lfw_db_to_tfrecords.py

bob/learn/tensorflow/script/load_and_debug.py

bob/learn/tensorflow/script/train.py

bob/learn/tensorflow/test/test_cnn_scratch.py

bob/learn/tensorflow/test/test_train_script.py

bob/learn/tensorflow/test/test_utils.py

bob/learn/tensorflow/trainers/SiameseTrainer.py

bob/learn/tensorflow/trainers/Trainer.py

bob/learn/tensorflow/trainers/TripletTrainer.py

bob/learn/tensorflow/utils/util.py

setup.py