new machine updates
fixing version mismatch of Selenium from 2.20 to 2.35
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into dev
added check for required variables in check_configure
Merge pull request #1516 from naylor-b/require_true

added check for required variables in check_configure
Merge pull request #1517 from setowns1/bug2

Fix for user Rethore's List vs. CaseIteratorDriver bugs.
fix for scaler bug
reworked the required variables story to provide better error messages
Merge pull request #1518 from naylor-b/required2

reworked the required variables story to provide better error messages
fixed KeyError when adding a DOEgenerator after removing it
small doc change
fix for nose plugin
Merge pull request #1519 from Kenneth-T-Moore/scaler

Fixed bug with derivative of parameters with scalers.