Chat Settings Admin Backend

[HopperMCS]

There's this whole thing about chat. We should have an entire settings page for admins to customize chat. I can see options for:

• Removing chat entirely from the view - I view it as unnecessary clutter.
• Commands - I know people might want commands but not chat. We should have a toggle for commands.
• Chat and Global Chat should have their own toggles.

I say this because Elijah and I don't want chat taking up screen estate - when we play, we actually call everyone we play with on Discord.

Also, because I want to make this site more mobile-friendly, (students have iPhones, so the app is good for Android, buuuut...) I want to be able to remove it completely from view - my purposes for using it are locally with students, but IMHO instead of arguing we should go with a "live and let live" approach with some of these.

[HopperMCS]

@gianlu at a family gathering. Will begin posting more issues when I become available once again.

[devgianlu]

All done, opened #77 for chat commands.