Fix diff loading when there's a draft.
Review Request #1963 — Created Dec. 2, 2010 and submitted
Fix diff loading when there's a draft. I was using "review_request_details.get_absolute_url" as the diff base URL in the view_diff.html template, which worked fine for published reviews but broke when there was a draft, because ReviewRequestDraft doesn't have a get_absolute_url implementation. I've changed it to plumb through a base_url parameter, just like the chunk loading code.
Looked at a draft diff in a local site.