Added support for project-specific JS and fonts (Resolves #281 #279)

[beefoo]

• Added support for project-specific js via /project/{project-name}/custom.js
• Added support for project-specific font files via /project/{project-name}/fonts/
• Moved Typekit call to /project/{project-name}/custom.js for Anzac & Whale Tales; uses advanced embed code recommended by Typekit
• Added custom font files for Emigrant

See #281 and #279