* Added global webapp option for not having a void
* Fix for non-default lighting conditions
* Replace `isVoid` with whole `voidColor` feature!
* Default void colour should be black
* And now the default sky colour can also be set back to what it was
* Fix the low-res void colour
* Add config option for the new void colour setting!
(I hope I haven't forgotten any place to add it, but it does work, so I don't think so..?)
