Add changelog skeleton for version 1.4
Add changelog skeleton for version 1.4

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