Updated setup_iis.ps1 to match aspnet setup_iss.ps1

It appears that the build script wasn't set to Restore missing dependencies.
Update setup_self.ps1
fixed typo in setup_iis.ps1
Updated setup_nginx.py to match aspnet
Removed versus value

Grizzly is a platform/web-server and does not build on any other framework we have listed here.
Grizzly-jersey, as I understand it, builds on Grizzly

Hence, we should compare grizzly-jersey to grizzly rather than servlet.
Added check for proper installation of wrk before running the tests in benchmarker.py
Merge pull request #597 from TechEmpower/issue588

In response to issue 588
Resolve merge conflicts from PR451
Temporarily disabling the wrk installation check for further testing
Merge branch 'master' into PR451
Merge branch 'PR451'