Add ABILITYCATS and then make B3 override Inner Sea with having an actual sourcedate.

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@21828 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Fix filepath

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@21829 ef53c05b-3124-4d59-ae7d-fe3273f42be7