Board feature - display document version, contributors and activity log for documents

[#1]

Description - Display document version to the attachments section on the board and include the document activity log to the general issue activity log 

Why is this feature important to you - user experience, this feature would increase the visibility to the updates that happened on the documents and will significantly reduce the time spent on trying to find the updates

How would you like the feature to work

1. Document version (V1, V2, etc) displayed in the attachment section 

2. List contributors of the document

3. Include the document activity log to the overall issue/task activity log that is grabbed and displayed on the board

Current Behaviour - There is no way of identifying whether the document has more than one version