* chore: renderer test coverage
* fix: lint
* chore: api tests
* chore: tests for app reducer and StartGradeButton
* chore: lint
* fix: update reducer tests
* chore: more test coverage
* chore: test coverage
* chore: update test for merge conflicts
* fix: scroll enable on smaller screen
* fix: fixed review error width
* fix: make rubric and review error width align
* fix: rubric position to be sticky
* fix: remove double scroll bar at the bottom for small screen
* fix: make submission more response on small screen
* fix: rubric sticky and margin correctly on smaller screen
* chore: linting and update snapshot
* fix: make submission title resize to smaller on smaller screen
* fix: miss align rubic and submission file on the top
* fix: padding size on small screen
* feat: add optional on feedback comment for clarity
* chore: update test