When installing plugins, building the docs should come after installing the dependencies since doc building involves importing dependencies
Merge pull request #1466 from hschilling/P56973372-error-messages-installing-plugins

When installing plugins, building the docs should come after installing ...
fixes to plugin quickstart
fixing test to include _static dir
Merge branch 'dev' of http://github.com/OpenMDAO/OpenMDAO-Framework into docbuild
Merge branch 'docbuild' into gui