changed project list thumbnails tuncate
adding markdown cheat sheet at course creation
Merge pull request #218 from dirkcuys/master

Notification opt-out support
making some minor tweaks
Merge pull request #219 from ercchy/master

implementing markdown cheat sheet
Fix school edit pages

Surrounded each translation tag with braces. No longer raises a template rendering error.
Merge pull request #220 from svoigt/master

Fix template rendering error on school edit pages.
Fixed two typos
Merge branch 'master' of github.com:p2pu/lernanta