Merge remote-tracking branch 'origin/master' into bingKey
Tweak Imagery Layers Sandcastle app so it doesn't Bing-warn.
Break Bing Maps key out of the imagery provider.
Add more detail about setting the defaultKey.
Add a link to bingmapsportal.com in changes.md.
Changes.md improvement.
Reset the message count when clearing messages.
Merge remote-tracking branch 'origin/bingKey' into geocodingWidget

Conflicts:
	Source/Core/BingMapsApi.js