Added script for Refresh II.

Added scripts for Hunters Prelude and Archers Prelude.
The calculations were followed off Sword Madrigal and Blade Madrigal respectively.
Source for ranged accuracy caps:
http://wiki.bluegartr.com/bg/Hunter%27s_Prelude
http://wiki.bluegartr.com/bg/Archer%27s_Prelude

Sentinel's Scherzo calculation was incorrect.
Source: http://wiki.bluegartr.com/bg/Sentinel%27s_Scherzo

Changed Hunters Prelude and Archers Prelude AOE to 5 for use with Pianissimo.
Added animations for Sentinel's Scherzo and Refresh II.