#432 Create custom dependency injector

src/main/java/fr/xephi/authme/util/BukkitService.java

@@ -7,6 +7,7 @@ import org.bukkit.OfflinePlayer;
 import org.bukkit.entity.Player;
 import org.bukkit.scheduler.BukkitTask;
 
+import javax.inject.Inject;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Arrays;
@@ -28,6 +29,7 @@ public class BukkitService {
     private final boolean getOnlinePlayersIsCollection;
     private Method getOnlinePlayers;
 
+    @Inject
     public BukkitService(AuthMe authMe) {
         this.authMe = authMe;
         getOnlinePlayersIsCollection = initializeOnlinePlayersIsCollectionField();

src/main/java/fr/xephi/authme/util/Utils.java

@@ -165,8 +165,9 @@ public final class Utils {
         });
     }
 
+    @Deprecated
     public static boolean isNPC(Player player) {
-        return player.hasMetadata("NPC") || plugin.getPluginHooks().isNpcInCombatTagPlus(player);
+        return plugin.getPluginHooks().isNpc(player);
     }
 
     public static void teleportToSpawn(Player player) {

src/main/java/fr/xephi/authme/util/ValidationService.java

@@ -10,6 +10,7 @@ import fr.xephi.authme.settings.properties.RestrictionSettings;
 import fr.xephi.authme.settings.properties.SecuritySettings;
 import org.bukkit.command.CommandSender;
 
+import javax.inject.Inject;
 import java.util.Collection;
 import java.util.List;
 
@@ -22,6 +23,7 @@ public class ValidationService {
     private final DataSource dataSource;
     private final PermissionsManager permissionsManager;
 
+    @Inject
     public ValidationService(NewSetting settings, DataSource dataSource, PermissionsManager permissionsManager) {
         this.settings = settings;
         this.dataSource = dataSource;