Minor - make AuthMe.database private

- In favor of AuthMe.getDataSource()

src/main/java/fr/xephi/authme/converter/CrazyLoginConverter.java

@@ -27,7 +27,7 @@ public class CrazyLoginConverter implements Converter {
      * @param sender   CommandSender
      */
     public CrazyLoginConverter(AuthMe instance, CommandSender sender) {
-        this.database = instance.database;
+        this.database = instance.getDataSource();
         this.sender = sender;
     }
 

src/main/java/fr/xephi/authme/converter/RoyalAuthConverter.java

@@ -15,7 +15,7 @@ public class RoyalAuthConverter implements Converter {
 
     public RoyalAuthConverter(AuthMe plugin) {
         this.plugin = plugin;
-        this.data = plugin.database;
+        this.data = plugin.getDataSource();
     }
 
     @Override

src/main/java/fr/xephi/authme/converter/SqliteToSql.java

@@ -21,16 +21,14 @@ public class SqliteToSql implements Converter {
 
 	@Override
 	public void run() {
-		if (plugin.database.getType() != DataSourceType.MYSQL)
-		{
+		if (plugin.getDataSource().getType() != DataSourceType.MYSQL) {
 			sender.sendMessage("Please config your mySQL connection and re-run this command");
 			return;
 		}
 		try {
 			SQLite data = new SQLite();
-			for (PlayerAuth auth : data.getAllAuths())
-			{
-				plugin.database.saveAuth(auth);
+			for (PlayerAuth auth : data.getAllAuths()) {
+				plugin.getDataSource().saveAuth(auth);
 			}
 		} catch (Exception e) {
 			sender.sendMessage(plugin.getMessages().retrieve(MessageKey.ERROR));

src/main/java/fr/xephi/authme/converter/vAuthFileReader.java

@@ -23,7 +23,7 @@ class vAuthFileReader {
      */
     public vAuthFileReader(AuthMe plugin) {
         this.plugin = plugin;
-        this.database = plugin.database;
+        this.database = plugin.getDataSource();
     }
 
     public void convert() {

src/main/java/fr/xephi/authme/converter/xAuthToFlat.java

@@ -30,7 +30,7 @@ class xAuthToFlat {
      */
     public xAuthToFlat(AuthMe instance, CommandSender sender) {
         this.instance = instance;
-        this.database = instance.database;
+        this.database = instance.getDataSource();
         this.sender = sender;
     }