Corrected some errors inteh Rebellion skill_tree and job_db

- Fixed bugreport:7724 (thanks ot Poison, LuLu)
  http://hercules.ws/board/index.php?app=tracker&showissue=7724
- Please note that, in Pre-Renewal, the job_db values aren't accurate,
  since the Rebellion class never existed before. It is currently using
  values from the Gunslinger class, just like Oboro and Kagerou use
  values from the Ninja class.

Signed-off-by: Haru <haru@dotalux.com>