Removed branding and documentation

- These modules have moved to git repos tina4stack/branding and tina4stack/documentation respectively.
Added code for local caching

Tina4/Routing/ParseTemplate.php

@@ -151,9 +151,10 @@ final public function parseFile(string $fileName)
                 else {
                     Debug::message("$this->GUID Found ".$realFileName, TINA4_LOG_DEBUG);
                     $this->headers[] = "Content-Type: " . $mimeType;
-                    $this->headers[] = ('Cache-Control: max-age=' . (60 * 60) . ', public');
+                    $this->headers[] = ('Cache-Control: max-age=' . (60 * 60 * 60) . ', public');
                     $this->headers[] = "Tina4-Debug: ".$this->GUID;
-                    $this->headers[] = ('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 60))); //1 hour expiry time
+                    $this->headers[] = ('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 60 * 60))); //60 hour expiry time
+                    $this->headers[] = ('Pragma: cache');
                     $this->fileName = $realFileName;
                     if (!is_dir($realFileName)) {
                         $content = file_get_contents($realFileName);

Tina4/Routing/Router.php

@@ -204,8 +204,10 @@ public function returnStatic($fileName)
 
         $headers[] = ('Content-Type: ' . $mimeType);
         $headers[] = ('Tina4-Debug: '.$this->GUID);
-        $headers[] = ('Cache-Control: max-age=' . (60 * 60) . ', public');
-        $headers[] = ('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 60))); //1 hour expiry time
+        $headers[] = ('Cache-Control: max-age=' . (60 * 60 * 60) . ', public');
+        $headers[] = ('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', time() + (60 * 60 * 60))); //60 hour expiry time
+        $headers[] = ('Pragma: cache');
+
 
         $ext = pathinfo($fileName, PATHINFO_EXTENSION);
         if ($ext !== "twig") {

Tina4/Twig/TwigUtility.php

@@ -72,17 +72,6 @@ public static function initTwig(?Config $config = null): Environment
                 $twig->addFunction($dumpFunction);
             }
 
-            $includeCode = new TwigFunction("include_code", function($fileName) {
-                $fileName = "./src/templates/documentation/".$fileName;
-                if (file_exists($fileName)) {
-                    return file_get_contents($fileName);
-                }
-
-                return "";
-            });
-
-            $twig->addFunction($includeCode);
-
             $twig->addGlobal('Tina4', new Caller());
             if (isset($_SERVER["HTTP_HOST"])) {
                 $twig->addGlobal('url', (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]");