update german translation
update german translation

djpadz/kanboard,Nerdingher/kanboard,thylo/kanboard,kasunf/KanboardBOI,xavividal/kanboard,xavividal/kanboard,kanboard/kanboard,renothing/kanboard,stinnux/kanboard,jtourt/kanboard,cdgeelen/kanboard,renothing/kanboard,BlueTeck/kanboard,kanboard/kanboard,Busfreak/kanboard,filhocf/kanboard,lianguan/kanboard,jtourt/kanboard,djpadz/kanboard,stinnux/kanboard,kasunf/KanboardBOI,patoi/kanboard,lianguan/kanboard,djpadz/kanboard,vaikan/kanboard,patoi/kanboard,vaikan/kanboard,oliviermaridat/kanboard,stinnux/kanboard,jtourt/kanboard,renothing/kanboard,oliviermaridat/kanboard,filhocf/kanboard,kanboard/kanboard,patoi/kanboard,fguillot/kanboard,BlueTeck/kanboard,thylo/kanboard,Busfreak/kanboard,Nerdingher/kanboard,libin/kanboard,BlueTeck/kanboard,Shaxine/kanboard,cdgeelen/kanboard,thylo/kanboard,fguillot/kanboard,Shaxine/kanboard,libin/kanboard,Shaxine/kanboard,kasunf/KanboardBOI,fguillot/kanboard,xavividal/kanboard,cdgeelen/kanboard,vaikan/kanboard,Busfreak/kanboard,Nerdingher/kanboard,lianguan/kanboard,filhocf/kanboard,oliviermaridat/kanboard