Fixes a bug where submission zip creation would fail if a user was not included in the username mapping. This would happen when staff submit a submission from studio author view, which submits under a dummy "student" id that does not map to a real user.
3.6.17
fix a bug around rubric reuse placeholder text
3.6.16
3.6.15
Adds UI for the Rubric Reuse feature. Found in the ORA Edit Modal, Rubric Tab. Gated behind a `openresponseassessment.rubric_reuse` waffle flag
3.6.14
3.6.11
fix a bug with the submission zip download where we were not correctly filtering users