Improve HttpConnection::translateDocument().
Fix sorting by size in WebUI when non-default locale used.
Statistics: handle case where user has gone back to older version.
Fix extratorrents search plugin.
Improvements on the behavior of the program updater(closes #1282):

1. Check for updates every hour
2. Don't check again for this session if the user chose to ignore the new version
3. Display a message if the user checked for updates via the menu item and there isn't one
4. Remove dead code