simplify s3 uploading and add end-point for quest uploads
Merge branch 'feature/quest-tags' into feature/s3-upload-redux
PUT or POST static content urls
better function order in js example
better s3 API

- put s3 signing requests under affected resource
- add routes for listing and deleting s3 resources
update bucket policy
Merge branch 'master' into feature/s3-upload-redux