* Initial release idRO Cash trader NPC. npc: npc/re/merchants/cash_trader-idRO.txt (disabled by default)
* Added some items following idRO Cash trader NPC (added on db/re/item_db.txt)
* Updated documentation on doc/script_command.txt and npc.c
* Follow up d4128ce

Signed-off-by: Cydh Ramdh <house.bad@gmail.com>