Merge all of templates-sdk-dev into templates-sdk.

I actually just deleted templates-sdk/ then made a copy of templates-sdk-dev/
and then renamed it to templates-sdk/. So this is a clean copy.
Once this goes through cleanly, I'll delete templates-sdk-dev/ and update
all doc targets to use templates-sdk/.

Change-Id: I276695969e02fcf718370564e84b077a9d43725e