Regenerate old ranking report

[PhantomWatson]

Check for updates

• If a ranking report was created more than one(?) month ago, display a "check for updates" button.
• If a ranking report was created more recently, display a message with the date after which one can check for updates.
• The "check for updates" button will check an API endpoint for updated statistics and return a boolean.
• If there are updated statistics, the user will be asked if they want to generate a new ranking report.
• If so, a progress bar will be generated (maybe in a modal) and they'll be redirected to a new ranking report page when generation is complete.

Bonus points

• If there’s a practical way to do it, a summary of the ranking changes can be shown to the user. Perhaps only changes to Update vulnerable NPM dependencies #1 top-score qualification in selected metrics and changes in the top-ranked school should be mentioned.