Setup multisite for Intranet with site-specific modules and themes

[waynedyck]

• Multisite - Sharing the same code base
• About Drupal multisite installations
• Sharing the same codebase using Drupal multisite
• Restricting website access

[waynedyck]

Modules and Features unique to the public site will be moved from /docroot/sites/all/modules/ to /docroot/sites/default/modules/

This simply makes the interface cleaner when viewing the wsdot.intranet module list.