Template: Integrate compression on included .js and .css files, fix custom_css template variable.

themes/default/css.php

@@ -3,7 +3,10 @@
 require_once "root.php";
 require_once "resources/require.php";
 
-header("Content-type: text/css; charset: UTF-8");
+ob_start('ob_gzhandler');
+header('Content-type: text/css; charset: UTF-8');
+header('Cache-Control: must-revalidate');
+header('Expires: '.gmdate('D, d M Y H:i:s',time()+3600).' GMT');
 
 //parse fonts (add surrounding single quotes to each font name)
 	if (is_array($_SESSION['theme']) && sizeof($_SESSION['theme']) > 0) {
@@ -2667,3 +2670,13 @@ header("Content-type: text/css; charset: UTF-8");
 		text-align: left;
 		margin-bottom: 20px;
 		}
+
+
+<?php
+
+//output custom css
+	if ($_SESSION['theme']['custom_css_code']['text'] != '') {
+		echo $_SESSION['theme']['custom_css_code']['text'];
+	}
+
+?>