added bav.sis legend images

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@4025 e100092c-b5e6-494f-8bdf-19c1ff2a4001
add bav.sis makos

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@4026 e100092c-b5e6-494f-8bdf-19c1ff2a4001
add bav.sis layers for testing purposes and bav.sis model classes

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@4027 e100092c-b5e6-494f-8bdf-19c1ff2a4001