Fixed all transformers

bob/bio/face/algorithm/GaborJet.py

bob/bio/face/embeddings/facenet_sanderberg.py

bob/bio/face/embeddings/tensorflow_compat_v1.py

bob/bio/face/extractor/DCTBlocks.py

bob/bio/face/extractor/LGBPHS.py

bob/bio/face/preprocessor/FaceCrop.py

bob/bio/face/preprocessor/FaceDetect.py

bob/bio/face/preprocessor/HistogramEqualization.py

bob/bio/face/preprocessor/INormLBP.py

bob/bio/face/preprocessor/SelfQuotientImage.py

bob/bio/face/preprocessor/TanTriggs.py

bob/bio/face/test/test_baselines.py

bob/bio/face/test/test_embeddings.py

bob/bio/face/test/test_extractors.py

bob/bio/face/test/test_preprocessors.py

bob/bio/face/test/test_transformers.py