WebGL: Reference only the stuff that we actually need to access later.

updated changelog

[melonjs#560] fixed entity position when manually updating their posi…

…tion

[melonjs#544] added a collision handler and made the emoji bounce whe…

…n colliding

[melonjs#545] removed the old jsdoc template

small look refresh for documentation : more flat and flashy to be mor…

…e in line with the "melonJS" green and blog color scheme

Merge pull request melonjs#511 from aaschmitz/1.0.x

Normalized the CHANGELOG

0.9.10#