Rework chat into Velocity-managed channels

Chat is now handled entirely by VelocityCore through channels with
separate readers and writers (Global, Local/Fight, Blue/Red fight team,
Team, ServerTeam, Alert and 1:1 direct messages). Each player has a
saved default channel; messages from other channels are tagged with
the channel name, and every default change is announced.

- /global, /local, /tc, /stc, /msg and /r switch the default channel
  when called without a message
- /chat <channel> switches, /chat <channel> join|leave toggles reading
  (saved); moderators can join arenas by name and write with
  /chat <channel> msg <text>
- '+' sends from global to local and from local/fight to the fight team
- Referees write yellow in the fight chat
- Subservers no longer receive chat; arenas get a record-only
  ChatRecordPacket so replays keep their chat
- Remove the chat listeners of SpigotCore, FightSystem, MissileWars,
  TowerRun and TNTLeague

Closes #460, #129

TNTLeague/src/de/steamwar/tntleague/TNTLeague.properties

@@ -53,6 +53,3 @@ DEALER_REDSTONE = §eRedstone
 DEALER_BLOCKS = §eBlocks
 DEALER_TOOLS = §eTools
 DEALER_ANGLES = §eAngle Blocks
-
-PARTICIPANT_CHAT = {0} {1}§8» §7{2}
-SPECTATOR_CHAT = §7{0}§8» §7{1}

TNTLeague/src/de/steamwar/tntleague/events/GlobalListener.kt

@@ -22,7 +22,6 @@ package de.steamwar.tntleague.events
 import de.steamwar.tntleague.config.TNTLeagueWorldConfig
 import de.steamwar.tntleague.game.TNTLeagueGame
 import de.steamwar.tntleague.game.TNTLeagueTeam
-import de.steamwar.tntleague.message
 import de.steamwar.tntleague.plugin
 import org.bukkit.GameMode
 import org.bukkit.Material
@@ -90,20 +89,4 @@ object GlobalListener : Listener {
             null -> e.respawnLocation = TNTLeagueWorldConfig.lobby
         }
     }
-
-
-    @EventHandler
-    fun handlePlayerChat(event: AsyncPlayerChatEvent) {
-        val player = event.player
-        val msg = event.message
-
-        val fightTeam = TNTLeagueGame.getTeam(player)
-        if (fightTeam != null) {
-            message.broadcastPrefixless("PARTICIPANT_CHAT", fightTeam.name, player.name, msg)
-        } else {
-            message.broadcastPrefixless("SPECTATOR_CHAT", player.name, msg)
-        }
-
-        event.isCancelled = true
-    }
 }