Merge branch 'master' into 'bob-extension-config-file'

bob/bio/base/database/database.py

bob/bio/base/database/filelist/models.py

bob/bio/base/database/filelist/query.py

bob/bio/base/extractor/stacks.py

bob/bio/base/test/data/example_filelist2/dev/for_models.lst

bob/bio/base/test/dummy/extractor.py

bob/bio/base/test/test_filelist.py

bob/bio/base/test/test_stacks.py

bob/bio/base/tools/algorithm.py

bob/bio/base/tools/command_line.py

bob/bio/base/tools/extractor.py

bob/bio/base/tools/preprocessor.py

bob/bio/base/tools/scoring.py

bob/bio/base/utils/processors.py

doc/filelist-guide.rst