Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/13553] Add a method to the controller helper to display a message
  [prep-release-3.1.3] Add changelog for 3.1.3-RC1
  [prep-release-3.1.3] Prepare Changelog
  [prep-release-3.1.3] Add migration for 3.1.3-RC1
  [prep-release-3.1.3] Update version to 3.1.2-RC1

Conflicts:
	build/build.xml
	phpBB/includes/constants.php
	phpBB/install/schemas/schema_data.sql
	phpBB/styles/prosilver/style.cfg
	phpBB/styles/subsilver2/style.cfg

phpBB/phpbb/db/migration/data/v31x/v313rc1.php

@@ -0,0 +1,35 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\db\migration\data\v31x;
+
+class v313rc1 extends \phpbb\db\migration\migration
+{
+	static public function depends_on()
+	{
+		return array(
+			'\phpbb\db\migration\data\v30x\release_3_0_13_rc1',
+			'\phpbb\db\migration\data\v31x\plupload_last_gc_dynamic',
+			'\phpbb\db\migration\data\v31x\profilefield_remove_underscore_from_alpha',
+			'\phpbb\db\migration\data\v31x\profilefield_yahoo_update_url',
+			'\phpbb\db\migration\data\v31x\update_custom_bbcodes_with_idn',
+		);
+	}
+
+	public function update_data()
+	{
+		return array(
+			array('config.update', array('version', '3.1.3-RC1')),
+		);
+	}
+}