Storyboard changes.

It's hard to tell what these actually do and I don't recall changing
anything on the storyboard in a meaningful way. The changes don't seem
to be causing any issues but I thought it would be better to keep the
separate in case we have any need to revert them.
Fix crash when adding new tree.

At this point, we do not support adding alerts and stewardships from the
mobile app. In order to prevent the app from crashing when adding new
trees we need to make sure that we don't try to add stewardship and
alert cells to the page for non-existant data.
Change label for UDF types.

Plot should be shown to users as "Planting Site" but is returned in many
cases from the API as "Plot". This allows us to support changing these
titles easily by adding a dictionary of types -> labels.