update server version R13

- update version to R13
- add China Rising map pack
- complete tests for new maps
Merge pull request #128 from ozon/features/BF4_ChinaRising

[BF4] add DLC 'China rising' support
add AirSuperiority0 game mode

- change constants back to simple code
[BF4] getPlayerPings optimized

- removed rcon command 'player.ping' ( individual query with 'player.ping' is better used in plugins)
- respect filter
- tests adapted to the new behavior
Merge pull request #129 from ozon/fixes/BF4_parser

[BF4] add "Air Superiority" game mode (DLC1 China Rising) and minor fixes regarding ping