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Fixed NPC settings undefined, May dialog issues

NPC: needed to bind anon func in EnterFrame
May: Stupid effing events binding/unbinding problem. Now the lesson text isn't appearing
Fixed weird NPC event issue - game breaking

Was crashing after you leave the corridor.
Trying to unbind all events asap
Merge branch 'donkey'
Updated todo
Added classroom situation
disabled patrol
Renamed young_woman to diana and started adding library scene.