Improve SpringieExtension and ZeroK plugins

SpringieExtension: 0.2
  . emulate !setoption, !votesetoptions and !voteresign Springie commands
  . add SpringieService/GetMapCommands web service

ZeroK: 0.2
  . add support for recommended map boxes
  . configurable Elo and ZeroK level limits
  . fix startscript player data overwriting previous SPADS data