Complete Network Scene

- Boards are now synced across the server.
- Coins are now synced across the server.
- All coins and board are now present but not visible at startup  (To
make the networking easier).
- The coins are now pooled just like the board (To make the networking
easier).
- Coins have been changed from icospheres to sphere as this reduced the
lag of the game (alot!) change this back if this is a problem with my
computer only.