Refs T15006
- Move the logo filename from light-eye.png to a more-generic project-logo.png
- Update main-menu-view.css to reference project-logo.png
- Add static methods to PhabricatorPlatformSite to get the project name and organization name, hardcode these to "Phabricator" and "Phacility"
- Fix all occurrences of "Phabricator" and "Phacility" appearing in user-visible text, when passed through pht() and replace with the newly added methods