[#284] attempt at fixing event unsubscribe when the layer is destroyed
[#284] attempt at fixing event unsubscribe when the layer is destroyed

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