Fix issues with psychometrics and git import
Add napoleon to the requirements to build our docs
Fix split test child id
Merge pull request #3759 from cpennington/opaque-keys-rtfd-requirements

Add napoleon to the requirements to build our docs
xml export of drafts was exporting everything
now only exports the drafts into the draft subdir
STUD-1627
Merge pull request #3757 from edx/sarina/fix-git_import

Sarina/fix git import
Merge pull request #3760 from edx/sarina/fix-split-test-child-id

Sarina/fix split test child
Merge pull request #3761 from edx/dhm/opaque-export

Dhm/opaque export
Move the key classes into the key package
STUD-1625