Fix it so that emails and previews have the bug data. This allows you to pass a preconstructed bug list to create_post_with_bugs rather than querying it from the DB, and unifiess the kwargs-to-bugstatuses code so that it can be shared between the post and preview methods.
Merge branch 'master' into styled-buglist

Conflicts:
	weeklyupdates/templates/common.xhtml