Fix download links for attachments
Download links received are not working (tested with personal conversation timeline). They’re being written out incorrectly.
Sample:
download://laura/specific-friends/laura/from/2015-08-31T15_52_01.126Z/2014-2015.pages
Should be:
download://specific-friends/laura/from/2015-08-31T15_52_01.126Z/2014-2015.pages
(Changing to latter in the inspector makes Heartbeat crash when the link is clicked.)