- Added mercenary guild switch npc from aegis
- Fixed a bug to rent a mercenary in izlude duplicate (it gave a wrong mercenary)
- added a missing delitem in cupet.txt (forgot to delete the 2nd item)
- change the rand part in Mysterious Documents npc in magic_books.txt to match aegis
- little clean up in quests/ninja_quests.txt
- replace the npc id to the constant in theses files

Signed-off-by: Capuche <capucrath@gmail.com>