NEW: hooks modify_theme_images and beforethemelist in themes.php

git-svn-id: http://svn.montala.net/svn/resourcespace@5855 c08608d7-6e46-0410-86ca-f2a6f1370df5
FIX - Updated transform so that numeric values are validated


git-svn-id: http://svn.montala.net/svn/resourcespace@5856 c08608d7-6e46-0410-86ca-f2a6f1370df5