Merge branch 'vulture-all-the-things' into 'master'

arkindex/dataimport/git.py

arkindex/documents/models.py

arkindex/documents/surface.py

arkindex/documents/tasks.py

arkindex/documents/tests/commands/test_reindex.py

arkindex/documents/tests/test_pagexml.py

arkindex/images/importer.py

arkindex/project/tests/test_checks.py