2015 summit

Dart summit pages.

Staging server: https://dart-lang-devsummit.appspot.com/events/2015/summit/
The name of the moderator page, "I want to learn from the Dart team", is a little strange. How about something like "Dart Summit Q&A".

Also, the text right here is a little strange, and it doesn't specify the kind of questions we'd like to get. (I assume that very specific technical questions would be off-topic, since people would want them answered sooner or in a smaller venue.) Since I'm not sure what questions we want, I'll be vague, too. :) How about:

If you have questions for the Dart team, please add them to <a...>Dart Summit Q&A</a>.