Default nginx config should be 02_wp.wsu.edu.conf

This allows redirects at 00_redirects.conf and SSL at 01_ssl.conf
or similar.
Upgrade WP-CLI to 0.15.1 on WSUWP Platform
Upgrade Nginx to 1.7.1 mainline
Upgrade Nginx Pagespeed module to 1.8.31.3-beta
Additional references for newest Nginx and Pagespeed
Set listen.owner and listen.group in www.conf
Disable includeSubDomains in SSL config until wider coverage

This can cause some strange issues if we aren't prepped for it.
Add a few more static filetypes to avoid running through PHP
Merge pull request #98 from washingtonstateuniversity/update/wsuwp-platform

[PR] Update WSUWP Platform provisioning