K, my actual proper pull request

Ignore those other 2 uh, I still can't into git.

Changes:
Skill.java:
- Removed un-needed index stuff, deprecated getIndex()
- Made compilable, getCurrentLevel() invokes a non-existent hook (Client#getCurrentStat())

MenuAction.java
- Added in an ActionListener, scripts can now confirm that an action has been done.

That's about it