Add comment and comment list.
add comments to the Task.
Add comparator to Comment class. Test Comment class.
Merge branch 'feature-85-comment_backend' of https://github.com/R2-Team2/wpi-suite into feature-85-comment_backend
Add test for CommentList.
Fix merge conflicts with feature-86-activity_log.
Reduce audit errors to lowest severity.
Resolve erroneous use of List to LinkedList.
Fix some audit flags.
Merge branch 'develop' into feature-85-comment_backend
No tests fail.
Merge branch 'develop' into feature-85-comment_backend
Merge branch 'develop' into feature-85-comment_backend
Merge pull request #63 from R2-Team2/feature-85-comment_backend

Feature 85 comment backend