[#239] Updated the mouse scrolling event support
[#239] Updated the mouse scrolling event support

(mainly untested)

rlugojr/melonJS,rlugojr/melonJS,gopalindians/melonJS,melonjs/melonJS,TukekeSoft/melonJS,Smoss/Enoru-eco,gopalindians/melonJS,TukekeSoft/melonJS,melonjs/melonJS,rlugojr/melonJS,MarkoIvanetic/melonJS,gopalindians/melonJS,TukekeSoft/melonJS,srbala/melonJS,srbala/melonJS,MarkoIvanetic/melonJS,srbala/melonJS,Smoss/Enoru-eco