translations, model and mako for two bag layers

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@3737 e100092c-b5e6-494f-8bdf-19c1ff2a4001
add bag layers legend images

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@3738 e100092c-b5e6-494f-8bdf-19c1ff2a4001
modified two EN legends

git-svn-id: https://svn.bgdi.admin.ch/mf-chsdi/trunk/chsdi@3739 e100092c-b5e6-494f-8bdf-19c1ff2a4001