Finished Task A of the first cardinality activity
Fixed a bug when a bird no longer has a nest
Added early error detection to robot

So they don't pick up an empty hole.
Fixed a bug where box hole's not rendered

When first created. E.g. drag and drop.
Unwatched robots now wait for birds and Bammer

If drop causes animation (even though robot isn't watched) then it will
wait for animation to finish.