FIX: emails with embedded posts should always use absolute URLs
FIX: Code and Emoticon formatting in HTML emails.
whitelist google.com/maps iframes
FIX: Missing styles in HTML digest emails
use CDN_URL environement variable in production
Show post count in digest emails. Sort by score
FIX: Too much white space between posts on mobile
add download link in lightbox
FIX: Allow link redirects inside oneboxed posts
Merge remote-tracking branch 'upstream/master'