Add a Table of Contents to the game listing

[dfabulich]

The game listing page is long, especially on mobile, and it has a lot of sections:

• External Links
• Have you played this game? (with options to rate, review, "I've played it", add to wishlist, add to "not interested" list)
• Description ("About the Story")
• Awards
• Ratings and Reviews
• Off-site reviews
• News
• Tags
• Game Details (IFID, version number, license)
• "If you enjoyed ${game}… (related games, recommended lists, polls)
• RSS feeds

So it might make sense to have a table of contents for all of these sections. In addition to making it easier to scroll, I think it will help some users discover features, e.g. I think a lot of people will assume that there's nothing after the reviews section, because it typically goes on for a while.