Dev import bak model and tooltip

URLs for tests
http://localhost:9007/rest/services/ech/MapServer/ch.bak.bundesinventar-schuetzenswerte-ortsbilder/13/htmlpopup
http://localhost:9007/rest/services/ech/MapServer/ch.bak.schutzgebiete-unesco_weltkulturerbe/8/htmlpopup