Final website version?

Pushed a bunch of things:
- Added a resources page
- Updated the landing page to have a more recent syllabus.  Also updated the description of the course.
- Modified the game pages to have a row of photos of the classroom during the process of making each game
- Added a row of recommended games for each of the game pages.
- Regenerated images for the sidebar
- Rearranged files and told Jekyll to ignore a bunch of folders when building the site
- Added JS disclaimer to the JS game page

I think that's everything.