show avatar in map challenge overview
barrier challenge response message method incorrectly named. renaming.
Add migration
Add video thumbnail to templates
Implement dynamic video thumbnails
Implement dynamic loading of instance thumbnails
Move display logic from model to template
Remove debugging comments from models.py
Implement dynamic video thumbnails on index page
Shift instance list titles down below instance thumbnail
Code review. Minor tweaks to coding style.
Add help text to Video Thumbnail field. Prevent get_video_thumbnail() from running if video_thumbnail already exists.
Update help text for game instances. Rearrange fields in game instance admin.
Help text tweaks.
Order past games displayed on index page chronologically.
Fix pluralized verbose name in Instance admin panel.
Order 'Your Games' chronologically
Merge branch 'temp'