update receivers and devices with last valid values
update receivers and devices with last valid values

glidernet/ogn-python,Meisterschueler/ogn-python,Meisterschueler/ogn-python,Meisterschueler/ogn-python,glidernet/ogn-python,glidernet/ogn-python,Meisterschueler/ogn-python,glidernet/ogn-python