#38 only 2 layers of nodes have labels

[Rob Lintern]

**** Small Warning Bells *****
Problem: When first opened on a small project with one
package, the only 2 layers of nodes have labels. It's
hard to see what the boxes represent. "ZEST" and "src"
are the only nodes with labels.

Possible Solution: Have Creole check how many children
the Project has. If it's only one, then have labels on 3
levels.