* updated polish locale (translation) on install

* fixed hidding shop system menu on tibiacom template when disabled in
config
* some changes to sample characters: chanced town_id to 1, posx: 1000,
posy: 1000, posz: 1000 and default group_id to 1 so you can change
in-game outfits and they will be used
* fixed account.login redirect not working on tibiacom template
* installation: warn about wrong admin account name/id and password
* (internal) removed some duplicated code on install finish
* (internal) renamed installation step files to be in correct order
* added TODO file
* bumped version to 0.7.3

install/steps/1-welcome.php

@@ -0,0 +1,27 @@
+<?php
+defined('MYAAC') or die('Direct access not allowed!');
+if(isset($config['installed']) && $config['installed'] && !isset($_SESSION['saved'])) {
+	echo '<p class="warning">' . $locale['already_installed'] . '</p>';
+}
+else {
+	unset($_SESSION['saved']);
+	
+	$locales = array();
+	foreach(get_locales() as $tmp_locale)
+	{
+		$lang_file_main = LOCALE . $tmp_locale . '/main.php';
+		$lang_file_install = LOCALE . $tmp_locale . '/install.php';
+		if(@file_exists($lang_file_main)
+			&& @file_exists($lang_file_install))
+		{
+			require($lang_file_main);
+			$locales[] = array('id' => $tmp_locale, 'name' => $locale['name']);
+		}
+	}
+	echo $twig->render('install.welcome.html.twig', array(
+		'locales' => $locales,
+		'locale' => $locale,
+		'buttons' => next_buttons(false, true)
+	));
+}
+?>