Bring Templates (partially) in line with behavior of Languages to facilitate Core View integration
Also moves associations (selections from CHOOSE:) into a facet that more correctly identifies the behavior (SourcedListFacet not that great, AssociationFacet more clear)

Issue#: CODE-2442


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@23095 ef53c05b-3124-4d59-ae7d-fe3273f42be7