[negge]

Updates:

• fixed a bug where deleting the current backend would break the application until the browser was restarted
  
• switching backends no longer redirects you to Movies -> Browse (unless it has to)
  
• additional checks are now being made when adding/updating a backend. It is no longer possible to configure a backend incorrectly. It checks that something is listening on the specified hostname and port, that whatever listening is actually XBMC and finally that the entered credentials are actually correct. Hopefully this will decrease support issues somewhat.