#9 RSS feed per session contain session, reviews and comments
#9 pubDate == date of last update of session/reviews/comments
#9 Session RSS is now protected with Basic Authentication

Same username and password as the one to log in on the site
#9 refactored RSS output: split per session/review/comment
#9 sessions/activity_rss.xml is a feed will ALL activty
#9 make tests more robust
#9 Eager load :account too because :presenter delegates to it
#9 Clean up and clarify RSS templates
Dummy commit
Merge remote-tracking branch 'origin/RSSNotifications'