Updates the power descriptions of charm powered boots, cloaks, light-armor, mindstars, and staves to be more descriptive.

Minor bugfix to Object:getUseDesc to reference the correct actor

Updated resolvers.charm to allow specifying additional .use_power fields.

Adds rounding to Augmentation. Clarifies the psionic combat modifier. Corrects the way the psionic combat modifier is handled in combat.lua (and hence the weapon tooltips). Buffs the base mindstars slightly and slightly nerfs artifact mindstars to reduce the huge gap. Adds an icon for Psionic Maelstrom, though Nagyhal says he can make it better.

Object usable power descriptions can take the user's stats into account to provide more information on their effects.
Updated on use descriptions of charms and several artifacts.
The talent cooldown for on use powers can be any talent (not limited to T_GLOBAL_CD as for charms).

gave saner power scaling to acid wave rune and sun infusion so high level characters may possibly save against it