Include review ID in subject line of generated emails.
Include review ID in subject line of generated emails.

Some people use review request numbers frequently, and want to see them in the
emails as well. Tested locally on Ubuntu 11.10 in Firefox 9.0.1 using an
external IMAP/POP3 mail server.

Fixes bug 2271
Reviewed at http://reviews.reviewboard.org/r/2823/

Khan/reviewboard,brennie/reviewboard,1tush/reviewboard,atagar/ReviewBoard,1tush/reviewboard,Khan/reviewboard,atagar/ReviewBoard,beol/reviewboard,1tush/reviewboard,1tush/reviewboard,davidt/reviewboard,davidt/reviewboard,custode/reviewboard,atagar/ReviewBoard,beol/reviewboard,bkochendorfer/reviewboard,atagar/ReviewBoard,brennie/reviewboard,custode/reviewboard,Khan/reviewboard,atagar/ReviewBoard,davidt/reviewboard,brennie/reviewboard,sgallagher/reviewboard,1tush/reviewboard,1tush/reviewboard,custode/reviewboard,atagar/ReviewBoard,KnowNo/reviewboard,bkochendorfer/reviewboard,reviewboard/reviewboard,Khan/reviewboard,chipx86/reviewboard,Khan/reviewboard,custode/reviewboard,Khan/reviewboard,reviewboard/reviewboard,reviewboard/reviewboard,atagar/ReviewBoard,1tush/reviewboard,sgallagher/reviewboard,bkochendorfer/reviewboard,KnowNo/reviewboard,KnowNo/reviewboard,sgallagher/reviewboard,beol/reviewboard,atagar/ReviewBoard,Khan/reviewboard,beol/reviewboard,chipx86/reviewboard,1tush/reviewboard,davidt/reviewboard,brennie/reviewboard,Khan/reviewboard,1tush/reviewboard,chipx86/reviewboard,chipx86/reviewboard,reviewboard/reviewboard,bkochendorfer/reviewboard,sgallagher/reviewboard,atagar/ReviewBoard,Khan/reviewboard,KnowNo/reviewboard