* Script updates:
- Added new Renewal warpers for Satan Morroc maps.
- Updated "Succession of the Prince" quest with some new cases, and fixed checkquests.
- Updated portions of Ecology quest in 13.1 quests with new checks and cases.
- Added some missing 'disable_items' commands to 2004 Headgear quests.

* Other changes:
- Changed some strnpcinfo(1) -> strnpcinfo(0) in 13.2 quests. (bugreport:7853)
- Moved Rune Knight Kafra into main Kafras file.
- Revised documentation for 'addrid'. (follow-up 6572a9f)
- 'instance_id()' no longer throws an error upon failure.
- Fixed Desert Twilight/Sandstorm combo. (bugreport:7897, credits: Playtester)

Signed-off-by: Euphy <euphy@rathena.org>