* Updated Silent Breeze effect, only gives chance to give silence status to target and the caster (Eira), bugreport:8529, http://rathena.org/board/tracker/issue-8529-homunculus-s-eira-silent-breeze/
* Follow up 80f7984, and some minors

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