Add header and basic input elements

Created logo and icon images to put in the header
Add more UI elements

Loading gif, results pane
also refined input validation
also disable submit button until input is valid
Adjust CSS styles, add ziptastic results

input area is now part of the header
ziptastic results now update the page when they come in
search ziptastic for user inputted zip

show ziptastic results in the results panel
Use weather underground API instead of ziptastic

Show location, coordinates, current temperature, weather, and a weather
icon from the Weather Underground API.
Show info by cloning a hidden template, populating results, then
appending it to the visible part of the results panel.
Embed a Google map of the zip code in the results

Draw a highlight overlay over the approximate area covered by the zip
code.  These approximate boundaries are from the Google maps geocoding
service.  More exact boundaries are hard to get.
slight style tweaks