Show players ping in battlefield and other windows

[JayDi85]

XMage gameplay depends on the quality of communication of all players. That's why it's important to know opponents ping/lag.

Lobby stores info about all players and their ping (avg, last). It's can be used to show ping info on battlefield.

TODO:

• [ ] client side code (lobby gets new info and updates all other);
• [ ] limit: add ping limit for new game/tournaments players;
• [ ] lobby: add "Ping" column in tables list (example: "125 (580)", where 125 = avg ping of all match/tourney players, 580 -- max avg ping from players);
• [ ] lobby: add ping coumn in waiting players window;
• [ ] match: add avg and last ping to player info (popup hint on avatar);
• [ ] match: add "ping" under avatar/name (last ping, always shows it -- for full and minimized avatar);
• [ ] match: colorize "ping" or username if it gets connecting problem;
• [ ] tourney: add ping to tourney players list;
• [ ] draft: add ping to player names in draft screen;

[pak1989]

Having a max avg ping during match/tourney creation would be pretty good.

[spjspj]

I'd say this is a bad thing as people who are far from the server won't be able to get any games (limiting games by ping). Mine is consistently 250 ish but my quit %age is 7%.

[JayDi85]

Pings command works in game chat, but ignored in table/tourney. It can be useful.