Airports: image and weather links

2013-04-13 ~ Theo
* World Airports,Runways and Navaids r2.4: airport image links to Google
Maps
* World Airports,Runways and Navaids r2.4: tightened up Heads-up diaply
* World Airports,Runways and Navaids r2.4: added link to
wunderground.com