Update Czech translation by Marek Cernocky
Update Czech translation by Marek Cernocky

Pecisk/libgdata-gtasks,Distrotech/libgdata,Pecisk/libgdata,pwithnall/libgdata,Distrotech/libgdata,Distrotech/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata,Pecisk/libgdata-gtasks,GNOME/libgdata,Pecisk/libgdata,pwithnall/libgdata