Parse Nokia route response in helper thread.

Complex and really long routes can take multiple seconds to parse. Use
a helper thread to parse route responses to prevent blocking the main
thread.

Change-Id: I4130510ff15752427f31b429e53d2ab87fa1b84a
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Fix compile warning.

Member initialization order.

Change-Id: I83ad846c6297909ad8595114dccf8bf118b467b0
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>