Remove /mmoupdate and replace with /mcconvert database

src/main/java/com/gmail/nossr50/runnables/database/DatabaseConversionTask.java

@@ -0,0 +1,32 @@
+package com.gmail.nossr50.runnables.database;
+
+import org.bukkit.command.CommandSender;
+import org.bukkit.scheduler.BukkitRunnable;
+
+import com.gmail.nossr50.mcMMO;
+import com.gmail.nossr50.database.DatabaseManager;
+import com.gmail.nossr50.locale.LocaleLoader;
+
+public class DatabaseConversionTask extends BukkitRunnable {
+    private final DatabaseManager sourceDatabase;
+    private final CommandSender sender;
+    private final String message;
+
+    public DatabaseConversionTask(DatabaseManager sourceDatabase, CommandSender sender, String oldType, String newType) {
+        this.sourceDatabase = sourceDatabase;
+        this.sender = sender;
+        message = LocaleLoader.getString("Commands.mcconvert.Database.Finish", oldType, newType);
+    }
+
+    @Override
+    public void run() {
+        sourceDatabase.convertUsers(mcMMO.getDatabaseManager());
+
+        mcMMO.p.getServer().getScheduler().runTask(mcMMO.p, new Runnable() {
+            @Override
+            public void run() {
+                sender.sendMessage(message);
+            }
+        });
+   }
+}