Tag Alias: monster_world_4 -> monster_world_iv

Aliasing monster_world_4 -> monster_world_iv
Implicating monster_world_iv -> monster_world
Aliasing arsha <-> asha

Reasons:
1) http://vc.sega.jp/vc_mw4/
2) http://en.wikipedia.org/wiki/Wonder_Boy#Series_overview
3) She is called "Asha" in the English PSWii60 release.

Simple name and not a lot of posts so I just moved both to asha_(monster_world)

Also
create alias monster_world_4 -> monster_world_iv
create implication monster_world_iv -> monster_world