Script bug fixes.
- Added Renewal location for "Knight De Thomas" NPC (previously inaccessible), and upgraded the script to the latest version.
- Fixed Pre-Renewal Merchant Quest questlog commands. (bugreport:9218)
http://rathena.org/board/tracker/issue-9218-merchant-quest-add-error-quest-add-1010/
- Corrected a handful of 'rand(1)' statements.

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