Increase z-index of tour
Increase z-index of tour

To ensure the tour is placed over all page elements, including the
Compare button, the z-index has been increased.  The value was chosen
as 1 larger than the Compare z-index, which was set to place it over
the scenario dropdown icon/menu.

project-icp/bee-pollinator-app,project-icp/bee-pollinator-app,project-icp/bee-pollinator-app,project-icp/bee-pollinator-app