Moved code to extract participants from reviews and review requests to the appropriate models.

Review Request #939 — Created Aug. 3, 2009 and submitted — Latest diff uploaded

Information

Review Board SVN (deprecated)

Reviewers

Get participants from review(|_request) doesn't belong in email code.

Moved to appropriate models as a property.

This patch requires http://reviews.review-board.org/r/910/ to be applied first.
All tests pass.