Move themes directory under wp-content in the folder structure

This is the expected structure by WSUWP Indie
Add a hosts file to aid with local development
Add a basic .gitignore
Update .gitignore to ignore wp-config.php and spine theme
Add manual Nginx configurations for ucomm.wsu.edu
Add additional multisite configuration
Merge pull request #1 from washingtonstateuniversity/ucomm-prod

Refactor ucomm.wsu.edu to Indie structure with multisite