[#747] do not add the fullscreen control on mobile devices
[#747] do not add the fullscreen control on mobile devices

btw, is the `me.device.isMobile` still up-to-date in terms of UA
matching ?

rlugojr/melonJS,srbala/melonJS,melonjs/melonJS,rlugojr/melonJS,rlugojr/melonJS,srbala/melonJS,srbala/melonJS,melonjs/melonJS