Optimize network traffic a bit: - Send keepalive packets every second - Don't send keepalive packet if there was action packet within a second Time between turns in net game is reduced to 1 second now (was 2 seconds)

Don't store keepalive messages in game server spectators buffer

- Fix join/leave messages color - Add a check to prevent local schemes from overriding with bad ones

- Implement zoom reset - Implement mouse wheel events processing - Increase zooming speed twice - Bind zoom to mouse wheel, zoom reset to middle mouse button - Some formatting changes (yes, I'm evil :D )

Fix water rendering issues

And in frontend

Strip trailing spaces

Don't allow to look too deep

Fix water position when zooming

Fix background and horizont positions when zooming

Implement smooth zoom

Fix broken infinite skip turns logic