added empty threads timeline box
added status timeline property to threads graph api
added call to refresh threads timeline
added fetch data method to threadstimeline box
added template rendering to threadstimeline
added current status to threads graph api
added shared timeline to thread timeline box to display on table header
fixed threads layout refresh to refresh timeline on selection changes
added markup and styling for threads timeline
Merge pull request #19 from dzautner/add-threads-status-timeline

Add threads status timeline