Squashed 'course/format/grid/' content from commit 8d0d79f

git-subtree-dir: course/format/grid
git-subtree-split: 8d0d79fd7ead35ec77f4f7d462cce592bb671df1
Merge commit '6b11d649f03ba991d8718a65bef5f2f7050cafdc' as 'course/format/grid'
Get rid of redundant peer comments

Workshop 2.5 now includes comments on all form types. Peer comments are
now redundant.
Get rid of names in Team Mode

Assessments done in Team Mode should only ever show the Team name, not
the name of the team member who submitted the work.