Hydro now uses tf2_msgs but with the legacy format (i.e. tf2_msgs/TFMessage instead of tf/tfMessage).
Couldn't get the visualisation view to draw anything, even a simple triangles shape. This fixes that - it's logically what should be there and other tutorials all do this, but I can't find (after googling) any logical reason why this should have been working earlier and not now. Some bugfix in android created this bug here?
Commented configuration for testing with a turtlebot.
Work with upgraded frame names compatible to hydro's tf2 infrastructure.