Teachers and students can modify LT levels of understanding
Fixed static pages spec. Tests passing again.
Commenting added on level up/down.
Commenting on LT level modification added.
Merge pull request #61 from stantastic6/comments
Merge pull request #61 from graspapp/comments

Add comments.
Update schema.
Merge branch 'master' of https://github.com/graspapp/grasp into luke-working