TNL-797: Add Notes page.
Rename require-config.
create OAuth2 token, assumes 'edx-notes' OAuth client present in db
Fix sorting and unit name.
Add user to the view.
Fix bok-choy tests.
Address comments.
use fixture for Client preloading
bok-choy: remove ClientFactory in two more places
Fix docstrings.
mock runtime.get_real_user
Add auth token.
Fixed Bok-Choy test (wrong selector)
add ClientFactory to EdxNotesHelpersTest
Revert "Fixed Bok-Choy test (wrong selector)"

This reverts commit 2bb9dd05b66c0925cd057206d19210f5f7569897.
Use set instead lists.
TNL-660: Toggle single note visibility.
Fix rebase conflicts.