Improve behavior on add/remove tests to do them AFTER the write/read, so that they are *guaranteed* to only happen on the pc.
Issue#: CODE-1976


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk/pcgen@18978 ef53c05b-3124-4d59-ae7d-fe3273f42be7