Improved Weather Feed to use Weather Underground API

I registered a Weather Underground API key, which we can use to get an
XML feed of an absurd about of weather info. WeatherFeedObject now
implements this. It should also load way faster than our previous HTML
page we had to load (all of the formatting is stripped). Wunderground's
API automatically resolves the location of the client by IP, so
LocationObject may not be needed anymore. However I kept it incase
anyone can think of another use for having the IP.

The display now shows color-coded temperature, an icon representing
weather, and the location. The speed is improved as well. Please note
that my API key only permits 10 refreshes per minute, and 500 per day.
Once we go over this limit we may be able to request a student package
with additional requests. But for now we should try to avoid going over.