fixes wrong refs
Merge remote-tracking branch 'origin/dev' into dev
Merge remote-tracking branch 'origin/dev' into dev
improve accuracy using erfc(1-erf(x)) not erf
Merge pull request #1746 from cwmine/dev

improve accuracy of PI and EI using erfc
Merge branch 'simplify' of github.com:naylor-b/OpenMDAO-Framework into simplify
Merge branch 'simplify' of github.com:naylor-b/OpenMDAO-Framework into simplify
Merge branch 'simplify' of github.com:naylor-b/OpenMDAO-Framework into simplify
fixing gui tests
merged dotgraph changes