Added AI to control Snake

AI Option still needs to be configured in the home page. Right now, the
game automatically uses the AI.
Added interface for choosing degree of freedom - lacks functionality
Made initial snake display a bit smoother
added degrees of freedom js logic to start menu

menu now lets user choose degrees of freedom; also changed time that
the “win” window fades
delete unused files

fixed var degree reference; wrong class selector before
Added turn-based implementation
Merge branch 'AI-Component'

Conflicts:
	app/js/snake.js
fix merge

AI + Custom