EMI: Free costumes once all chores have finished.
EMI: Return the first costume that has a model component in Actor::getCurrentCostume.
EMI: Do not reset the costume when a new wear chore is started. Fixes #878
EMI: Remove special treatment of wear chores which is no longer necessary.
EMI: Make Lua_V2::findCostume only return true if a costume is found.
EMI: Return playing chores of all costumes from GetActorChores.
EMI: Go through all costumes in IsActorChoring.
EMI: Push dumbshadow.cos to the back of the costume stack like any other costume.

The order of the costumes no longer matters. This also fixes a fairly common crash when saving the game.
EMI: Modify the current costume instead of the last costume on the stack.
EMI: Don't do null check for current costume in lookAtRate setter and getter.
Merge pull request #1028 from Akz-/emi-costumes

EMI: Costume fixes and cleanup