Save Sound / Powersaving setting to eeprom

Add: Save Sound / Powersaving setting to eeprom to avoid to set them at
each power on
if powersave time does not match preset values of 0 , 1 , 5, 15 or 30
min, value is used as it is but status only show powersave On
Fix : Move light setting  to eeprom class instead of printer class