Improved localization strings to match .ini values.

Updated mod preview image.
Added .ini options to customize Stun Strike's stun duration and stun chance.
Fixed Stun Strike's lack of actual knockback; knockback distance is configurable in the .ini.

Cleared earlier formatting changes and enhanced code to allow for full Pillar customization in the .ini. By default, Pillar is a free action that can be used during regular turns and Momentum. This should make it less tedious to use your Templars during missions.

Updated formatting and added instruction text for Pillar's configuration.