Allow upload of documents

[sjDCC]

Allow users to upload documents to DMPs. These could be PDFs to give timelines or supporting information. @xsrust are there limitations we need to specify for security issues and considerations on export.

Raised by Helen Porter at user group and others for AHRC template and Finnish work

We had a request to upload documents which pertain to the entire DMP, in-order to keep all DMP content in the one place. (This would be separate to per-question uploads)

This seems feasible to handle through Dragonfly for now, and to refactor over to ActionStorage when we upgraid to Rails 5.

We will still need to think about:
Where/how to display/preview uploaded documents.
How to handle the export of DMPs with attached documents across our various formats.

[sjDCC]

Sam noted that this feature is available in Rails 5 so we agreed to park until we migrate

[mariapraetzellis]

Resurfacing this issue as this feature has come up as part of our FAIR Island project. For our use case, users will need to upload an existing DMP that relates to their proposal. We don't need to extract any information in the file, but we will need to store the file w/in the system so administrators can access it.

Outstanding questions:

• What does this mechanism look like in Rails?
• Where would the file be stored?
• How to handle the export of DMPs with attached documents across our various formats?

Potential locations for this feature:

• New question type within the template to upload documents
• On the Project Details tab