Rename temp.cc to sensord.cc
nb-monitord is now called nb-sensord
[sensord] Implement own proxy loop

For later extensability
[sensord] Implement clean shutdown
[sensord] Add a data cache for sensor data
[httpd] Add http server to serve sensord data

Very simple python based one, but does its job.
[httpd] Add fontello icon font+css
[lcd] rename contrib/LCDTemp....py to lcd/nb-lcd
[httpd] Add server-sent events support
Update icon fonts
[httpd] use different spinner for polling
[http] only sent updates > 0.1 for SSE