Convert Pathfinder statblock sheet to FreeMarker
- Migrate recent changes in preview pathfinder statblock sheet to ftl
- Replicate ftl sheet to previews folder

Issue#: OS-345


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@24719 ef53c05b-3124-4d59-ae7d-fe3273f42be7