Use CDNJS for vendor libraries and remove unneeded JS

Fixes #1
Fix symbol for content_fo
Add middleman deploy

Fixes #2
Merge branch 'feature/deploy' into develop
Use asset_url to create links to content

Fixes #3
Add CDNJS to javascript

Fixes #1
Undo asset_url in templates
Add README documentation

Fixes #4
Update metadata handling
Merge branch 'release/1'