Remove Static Abuse - Command Tasks

src/main/java/com/gmail/nossr50/database/DatabaseManagerFactory.java

@@ -4,7 +4,7 @@ import com.gmail.nossr50.datatypes.database.DatabaseType;
 import com.gmail.nossr50.mcMMO;
 
 public class DatabaseManagerFactory {
-    private mcMMO pluginRef;
+    private final mcMMO pluginRef;
     private Class<? extends DatabaseManager> customManager = null;
 
     public DatabaseManagerFactory(mcMMO pluginRef) {

src/main/java/com/gmail/nossr50/database/FlatFileDatabaseManager.java

@@ -16,7 +16,7 @@ import java.io.*;
 import java.util.*;
 
 public final class FlatFileDatabaseManager implements DatabaseManager {
-    private mcMMO pluginRef;
+    private final mcMMO pluginRef;
     private final Object fileWritingLock = new Object();
     private int USERNAME = 0;
     private int SKILLS_MINING = 1;

src/main/java/com/gmail/nossr50/database/SQLDatabaseManager.java

@@ -19,7 +19,7 @@ import java.util.*;
 import java.util.concurrent.locks.ReentrantLock;
 
 public final class SQLDatabaseManager implements DatabaseManager {
-    private mcMMO pluginRef;
+    private final mcMMO pluginRef;
     private final String COM_MYSQL_JDBC_DRIVER = "com.mysql.jdbc.Driver";
     private final String ALL_QUERY_VERSION = "total";
     private final Map<UUID, Integer> cachedUserIDs = new HashMap<>();