Update the 2.0 draft release notes.

Review Request #5832 — Created May 15, 2014 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
b939e31...

Reviewers

This adds in everything from the 2.0 RC3 release notes that wasn't a regression
or fix for a 2.0-only feature.

Built HTML docs and read through them.