Fix to display Differeniators.
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
GUI test tweak
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
GUI test tweak
Merge pull request #1369 from setowns1/bug

Fix display and update of FiniteDifference and objects in LIst and Dictionary slots