Issue 3189: Add a link to the interdiff from the review request draft banner
Review Request #5384 — Created Feb. 2, 2014 and submitted — Latest diff uploaded
Adds a link to the interdiff from the review request draft banner to make it easier to see the change the draft contains.
Fixes https://code.google.com/p/reviewboard/issues/detail?id=3189.
Tested the change using a development review board with different drafts (with and without diffsets).
Unit tests pass.