Closes #1073: Check for all gold types in canSell. For containers, only gold_001 is relevant, but items in the world can be sold as well.
Closes #1072: Fix extra light being added multiple times when showCarriedLeft(true) is called repeatedly
Check if levitation is enabled before levitating
Fix particles being too small. Looks like this should actually be size*2.
Merge remote-tracking branch 'scrawl/master' into openmw-28