Add key metrics to the dashboard.

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Is your feature request related to a problem? Please describe

Understand the data metrics of a Q&A platform.

Describe the solution you'd like

• Resolved:
  • The questions that have been answered and the percentage of resolved (accept) questions
  • (number of accept questions) ÷ (total questions)
• Unanswered:
  • The questions that have not been answered, and the percentage of unanswered questions
  • (number of unanswered questions) ÷ (total questions)