Natural view type leaf sponsorship text position error

[jrosindell]

The following applies to the natural view and was not introduced by the recent tours updates - it's probably been an issue for a while and has gone un noticed.

[jrosindell]

We'll need to check the code that decides whether to draw the sponsorship text at the top or bottom of the leaf to fix this. Probably something about that code is specific to the view type and so has got messed up in other view types. I note that the problem does not exist with any view other than the natural view.