Investigate supporting LOOP2 packets

[davidrg]

But only if we can do so without disrupting update frequency. Test out on a spare console. If we're going to support this it ought to be done before 1.0.

• [x] Find a list of extra extra values we can get
• [x] Update data logger and test with a spare console
• [x] Update database
• [x] Update weather-push
• [x] Update weather-server
• [ ] Update Desktop Client

[davidrg]

The following new columns are available on davis_live_data:

• altimeter_setting
• average_wind_speed_2m
• average_wind_speed_10m
• gust_wind_speed_10m
• gust_wind_direction_10m
• heat_index
• thsw_index