Use @LinkedTimer for the timers of linked classes

The repeating timers that linked classes and the plugin main classes started
once for the whole runtime now use @LinkedTimer, on Spigot (BauSystem,
SpigotCore, LobbySystem, MissileWars, TowerRun, Teamserver) and Velocity.
The FightInfoPacketSenders of MissileWars and TowerRun are linked themselves
instead of being started by the main class.

TowerRun/src/de/steamwar/towerrun/FightInfoPacketSender.java

@@ -19,6 +19,8 @@
 
 package de.steamwar.towerrun;
 
+import de.steamwar.linkage.Linked;
+import de.steamwar.linkage.LinkedTimer;
 import de.steamwar.network.NetworkSender;
 import de.steamwar.network.packets.common.FightInfoPacket;
 import de.steamwar.sql.SteamwarUser;
@@ -33,6 +35,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
+@Linked
 public class FightInfoPacketSender implements Runnable {
 
     private final World world = Bukkit.getWorlds().get(0);
@@ -44,6 +47,7 @@ public class FightInfoPacketSender implements Runnable {
     private final String redName = "§cAlive";
 
     @Override
+    @LinkedTimer(delay = 1, period = 1, unit = LinkedTimer.Unit.SECONDS)
     public void run() {
         if (Config.test()) {
             return;