FIX: Some RSS feeds do unsafe redirects

There are people who have RSS feeds set up that do HTTPS -> HTTP
redirects which throw errors. Since RSS feeds are all configured
by admins I think it's OK if they allow an unsafe redirect as the
content is public anyway. This will reduce many server side errors.

app/jobs/scheduled/poll_feed.rb

@@ -66,7 +66,7 @@ module Jobs
       private
 
       def rss
-        SimpleRSS.parse open(@feed_url)
+        SimpleRSS.parse open(@feed_url, allow_redirections: :all)
       end
 
     end