Add some preview sheets. statblock_pathfinder tries to emulate the default Pathfinder PRG statblock as good as we can, the AbilitiesTests are for internal testing purposes

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk/pcgen@19763 ef53c05b-3124-4d59-ae7d-fe3273f42be7