Create a done section for stories that are completed

Description #

Create a place to view done stories and a way to move stories from the backlog to the done section.

Implementation #

The templates list the stories based on these tags:

• Use 'backlog' tag for stories that are in the backlog
• Use 'done' tag for stories that are done

Tasks #

• Update backlog templates to only show backlog stories
• Add done templates and navigation
• Update story to done

• Next: Ensure consistent naming in navigation
• Previous: Automatically add a story to a sprint