Fixed typo in game/main.html. Supposed to be game.developer.url and not game.developer_url
Open developer's url in a new window (we don't want them leaving our site)
Merge branch 'master' of github.com:cvan/galaxy

Conflicts:
	src/templates/game/main.html
Merge pull request #54 from yangshun/master

Fixed typo and enhancement in game page's developer url