SAK-26165 Update the release grades and resubmission emails as well.

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@309767 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-26165 And make the link to the site in emails clickable

git-svn-id: https://source.sakaiproject.org/svn/assignment/trunk@309768 66ffb92e-73f9-0310-93c1-f5514f145a0a