Added preliminary support for vine thumbs and vid
More work on Vines

Auto refresh in most timelines now.
Minor tweaks

Also, clear:both doesn't seem to be obeyed in convo-item.html.  Anyone
care to try and work this out?
Conversation icon shows on tweet in timelines
Removed in app preview of twitpic images

TwitPic removed access to large versions of the pics and you now have to
link back to their website.  Thumbs still show as usual.
Detail view of vine searches show thumb etc
Added SendToFacebook & SendLinkToFacebook
ReadOnTouch Free & Pro supported
Vine processing is set with an Advanced Pref

As vine processing involves AJAX calls (and possibly many of them if
there are heaps of tweets with vine links), I've put in an option in
Advanced Prefs to toggle the functionality.  Its off by default.
Hopefully I'll find some way to do this cleanly without freezing the app
while processing multiple vine tweets.
Removed error log call