Add visual cue of what the actual final URL is for a given URL

[ecumike]

Referencing dependency of #38 and related #21 .

Think of a way to gracefully show the "final URL" in the report historical data table view for each run. Thoughts:

• We don't need it on every row.
• Maybe just add a "notes" column or icon with an indication that the run had a different URL than the previous run? This would effectively show you at which point/which run the URL changed.
• Maybe add a 'notes' section or something that simply lists the unique final URLs, and the run date which they first appeared? This would effectively show you a legend of which run(s) the final URL changed.