Implementation of FDC3 For Web

[robmoffat]

• Fix Demo (2.0 Conformance)
• Dragging Channel Selectors
• Finish coverage of da-server - two tests failing
• URL Override Argument (@kriswest )
• IFrame Display None for Intent Resolver

[kriswest]

@robmoffat do you remember what 'URL Override Argument' refers to - you've got it assigned to me in the list above.

[robmoffat]

I believe this was the ability to call getAgent with a URL other than the one from document.location.href. This is for the case where an app's location in the app store differs from the web page address that getAgent is being called from. (Possibly due to redirect)