BLD-1105 Gather links to units that use some configuration. (subtask of BLD-1104: List units that use group configuration.)
Send course outline url.
Correct course outline url in Underscore template via Mako template.
Use units that have experiments.
Update UI.
BLD-1109 Bok-choy tests (subtask of BLD-1104: List units that use group configuration.)
BLD-1106 Python tests: test function and template rendering (subtask of BLD-1104: List units that use group configuration.)