Updated Renewal Ninja shops. (incl. bugreport:8507)
http://rathena.org/board/tracker/issue-8507-ninja-merchant/

Fixed an NPC name length. (bugreport:8512)
http://rathena.org/board/tracker/issue-8512-riding-creature-master-shows-warning-in-console/

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