Add variable filter clear button.
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
Moving around some stuff
Merge pull request #1387 from Kenneth-T-Moore/hifi

Moving around some stuff
Merge branch 'dev' of github.com:OpenMDAO/OpenMDAO-Framework into bug
Merge pull request #1388 from setowns1/bug

Add clear button to variable filter
Suport ND arrays and VariableTrees for residual calculations.
Add support for residuals of ndarray elements connected to scalars.
Merge pull request #1389 from setowns1/bug

Support residuals for 'wide' variables such as arrays and variable trees