Link to userhosting page accordingly
Link to userhosting page accordingly

A static approach was chosen.  The link is not configurable, the page
concerning user hosting is expected to appear at `service/hosting`.

Fix #83

lukasjuhrich/sipa,agdsn/sipa,fgrsnau/sipa,agdsn/sipa,lukasjuhrich/sipa,MarauderXtreme/sipa,agdsn/sipa,lukasjuhrich/sipa,agdsn/sipa,MarauderXtreme/sipa,lukasjuhrich/sipa,MarauderXtreme/sipa,fgrsnau/sipa,fgrsnau/sipa