Merge branch 'revert-652e5ce0' into 'master'

.gitignore

.gitlab-ci.yml

bob/pad/face/__init__.py

bob/pad/face/algorithm/VideoCascadeSvmPadAlgorithm.py

bob/pad/face/algorithm/VideoGmmPadAlgorithm.py

bob/pad/face/algorithm/VideoLRPadAlgorithm.py

bob/pad/face/algorithm/VideoSvmPadAlgorithm.py

bob/pad/face/algorithm/__init__.py

bob/pad/face/config/aggregated_db.py

.../face/config/algorithm/video_cascade_svm_pad_algorithm.py

bob/pad/face/config/algorithm/video_gmm_pad_algorithm.py

bob/pad/face/config/algorithm/video_svm_pad_algorithm.py

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

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

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

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

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

bob/pad/face/config/extractor/frame_diff_features.py

bob/pad/face/config/extractor/video_lbp_histogram.py

bob/pad/face/config/extractor/video_quality_measure.py