Carpet Mod Version 20_06_02, Critical piston fixes again

-Fixed more bugs related to piston pushing.
-Added better description to camera mode and made default survival when server is set to spectator.
-Added more invisible fixes for when players die, go through portals and similar. (Carpet rule name change from: "portalsTurningPlayersInvisibleFix" to: "playersTurningInvisibleFix")