Fixed Refresh Issues

Added Methods to VideoBrowserListFragment:
      beginRefreshForToken(String token)
         -Refreshes the layout for a specified token. Future refreshes
will use this same token.
      beginRefresh()
         -Refreshes the layout using the current token

Implemented methods from VideoBrowserListFragment
      refreshes VBLF when setup closes
      refreshes VBLF on start if logged in