Fixed some stuff

* Removed the error from people disconnecting mid-game
* Changed the way the server registers with the MasterServer
Changed server browser layout

* Also edited the `serverComment` variable to be the same after starting
a server
Removed SmoothFollow.js for the 2nd time
Fixed some stuff and added some others

* Fixed a very rare case where multiple players left at the same time
* Added a temporary spectator mode
* Removed password when game starts
* Increased the mass of the buggys so they can collide better with the
balls
* Moved the paused script so it can be used while in the lobby
* Added score placeholder in netvars
Merge pull request #210 from bobsayshilol/master

Server additions