Store levitation/teleport enabled state in savegames (Fixes #1923)
Transfer item ownership to the buyer if item wasn't stolen (Fixes #1933)
Add missing World cleanup for mLevitationEnabled
Update barter offer for all items when another item is added (Fixes #1935)
Fix stolen faction-owned items not being confiscated
Merge branch 'master' of github.com:scrawl/openmw

Conflicts:
	apps/openmw/mwgui/tradewindow.cpp