Query parameter team_id contains a team ID (optional, but required in the future)
Returns Id of created document
Retrieving a document
GET /api/documents/<id>
GET /api/documents/<id>?thumbnail=true to download the thumbnail of an image or video, if available
Retrieving a document locator (JSON object)
GET /api/documents/<id>/locator
Returns a JSON response of the form {"DocumentUrl":"<the document URL>"}
For images and videos with available thumbnails, returns a JSON response of the form {"DocumentUrl":"<the document URL>","ThumbnailUrl":"<the thumbnail URL>"}