Modify front page graph to be more useful

[vash3g]

Summary of the Bug

There are a number of issues with the front page graph. Some people like it, some do not. It should show something useful while we have it and it is interesting data. The data shown is muddled and hard to see as it is.

Steps to Reproduce the Behaviour

i.e.,

1. Go to 'https://agagd.usgo.org'
2. See top graph
3. ???
4. Ponder/PR

The Expected Behaviour

This shows Games played by date over time on the bottom and a rising line for total games in the system.

Screenshots

If applicable, add screenshots to help explain your problem.

Hardware and Software Information

Desktop

• OS: Not Mobile
• Browser YES!
• Version YES!

Smartphone

• Device: No

Notes

Discussed in the Sept 2020 dev meeting. Thoughts on this was to make it smaller and more like the player pages with "fun facts" on the left and the graph on the right. On mobile the graph should sit on top of the info like the player pages graph.
Examples of Fun Facts suggested to see:
--Total number games
--Last 12 months games
--Last 12 months tournament
--Players played in tournaments last 12 months
----i.e. last 12 mo total players: 1180 // last 12 mo unique players: 640 (numbers made up)

[michaelhiiva]

#148, #34 are related issues and likely should be updated alongside this.