add class for piping non-https wms requests through proxy-host (ref BU-2565)
Merge pull request #9 in BW/maplib from feature/BU-2565-sende-wms-foresprsler-som-ikke-er to master

* commit '8541719c4563b79c248b93e4c4afb619dd6cc7e2':
  add class for piping non-https wms requests through proxy-host (ref BU-2565)