refactor(MailServiceImpl): reorder the fields to match an initialization order.

Related to #935

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/service/MailServiceImpl.java

@@ -38,14 +38,14 @@
 public class MailServiceImpl implements MailService {
 	private static final Logger LOG = LoggerFactory.getLogger(MailServiceImpl.class);
 
+	private final ReportService reportService;
 	private final MailgunEmailSendingStrategy mailer;
 	private final MessageSource messageSource;
 	private final String adminEmail;
 	private final Locale adminLang;
 	private final String robotEmail;
 	private final boolean testMode;
 	private final DatePrinter shortDatePrinter;
-	private final ReportService reportService;
 
 	public MailServiceImpl(
 		ReportService reportService,