The massive update

Added:
- Renewed quest system
- Overworked Lewis' message system to fit into the new system
- Windows will automaticly generate 2nd avatar sprite window
- Reduction of amount of code, in some scripts even by 50 lines or more

Bugs:
- NPC base does not know the variable "quest_name" -> crash

***TO TEST MESSAGES USE [T] TO OPEN A WINDOW AND [Z] TO SWITCH THROUGH
MESSAGES!***

- Other bugs are not known so far
- Plus old bugs (lanterns, ...)

Fixes:
- Quest system does not work with message system
- Message system does wierd things (outputting wrong messages)