Save back OWTemp arguments and input when io.xml is saved
DataLogger: Chage section layout to add Hour, we only read small chunk of memory
DataLogger: Add day of the month in section name
Add Jeelink Temperature sensor module, first commit
add jeelink module in lib, and add usage of this module in IO JeelinktTemp
Add libcurl as dependecy.
Use ETC_DIR as based path for configuration files
use sysconfdir as default etc directory