bug fix to passthrough editor
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework.git into guidev
intermediate changes to passthrough editor for multi-level variable trees
More passthrough debugging
fix variable tree get_attribute behavior
fixed passthrough toggling for multi-level trees
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework.git into guidev
finalized passthrough editor fixes
made necessary changes to variable tree tests
Merge branch 'guidev' of git@github.com:thearn/OpenMDAO-Framework.git into guidev
Merge pull request #1296 from thearn/guidev

Guidev