Add Accept and Reject buttons for workflow execution documents #8
Description
When a workflow has been run (typically, when it is in data_imported state), the project controller should be able to go and see the data resulting from this workflow (as it already works), and then either Accept or Reject it.
Accepted and Rejected exec docs should not be shown in the listing on front page.
For Rejected, a workflow should pick it up and remove all data resulting from the workflow execution.