Test quests ready for framework testing.

- Added "OK" responses to Test quests.
- SetSyncMode: changed logic to avoid duplicate NPC entries.
- Renamed Test3Script to Test3InitScript.
Fixed Token usage in Test scripts

- GetSyncModePriority() in Test scripts now use the correct Token.
WIP ChangeModPriority()

- Divided ChangeOrder() into ChangeInitOrder() (done) and
ChangeModPriority() (WIP).
- New functions: _MyGlobalSyncMode() & _MySyncMode().
- Added some missing !akNPC validation checks in Relationship module.
- Testing out a new syntax feature: startValidation & endValidation with
folding in comment support!