Add link to manually change to mobile version of website
Add link to manually change to mobile version of website

--HG--
branch : mobile

petervanderdoes/wger,wger-project/wger,kjagoo/wger_stark,DeveloperMal/wger,wger-project/wger,wger-project/wger,petervanderdoes/wger,rolandgeider/wger,rolandgeider/wger,DeveloperMal/wger,kjagoo/wger_stark,wger-project/wger,rolandgeider/wger,petervanderdoes/wger,kjagoo/wger_stark,rolandgeider/wger,petervanderdoes/wger,kjagoo/wger_stark,DeveloperMal/wger,DeveloperMal/wger