Housekeeping

Cleaned code
Removed redundant functions
Moved more functions to debugging.
Added Holes Logic
Update

* Fixed holes logic bug where only first hole in array killed snake.

* Added keyboard controls for speed (z & x).
Lunch Break

* Switched speed change keys
* Added display manager class to handle changes to html display
elements.
* Removed some console logs used for testing
* Added hi score (per session)
bleh