MPP frontend rewritten in TypeScript
- Kill JQuery
- Do something about the Synth (we need a replacement)
- Possibly fix up the midi engine if needed
- Renaming of some classes and variables (MultiplayerPianoClient, internalInterface, Handlers / Managers)
- TSify ebsprite.js
- Update and beautify css styles and html
- Fix ease-in and ease-out classes in RoomManager.ts (They've been broken for ages)
- Have not tested this with multiple clients