Adds the ability to specify an optional signing order for documents.
When specified a document will be considered sequential with recipients
only being allowed to sign in the order that they were specified in.
- Fixed z-index when dragging pre-existing fields
- Refactored document flow
- Added button spinner
- Added animation for document flow slider
- Updated drag and drop fields
- Updated document flow so it adjusts to the height of the PDF
- Updated claim plan dialog