Style leaderboard page

[benvinegar]

In this PR:

• Drops email from the column
• Formats duration and timestamp into something human readable.
• New design + art assets.
• Loads Rubik font from Google Fonts (should this be added to the repo and served locally?)

Note any rules embedded in this text is just placeholder copy and not the actual rules (we're still deciding).

Some remaining issues (not sure these are blockers though):

• The design is somewhat responsive, but there's some viewport dimensions where the design breaks down.
• The footer is "fixed" and it's possible to have content go underneath without triggering scrollbars.
• The results are still not sorted.

[bruno-garcia]

suggestion just fyi, I'll merge as-is

[bruno-garcia]

Suggested change

	@functions {
	public string FormatTime(TimeSpan duration)
	{
	// Implement the logic to format the duration as desired
	return duration.ToString(@"mm\:ss");
	}
	}

[bruno-garcia]

You can also just call ToString directly on the DateTime reference.

verbatin (@) string isn't needed here)

Suggested change

	<td>@FormatTime(score.Duration)</td>
	<td>@score.Duration.ToString("mm\:ss")</td>