Move rendering into private templates

Add an explicit template renderer with HTML views and partials for the app, bootstrap, package, and catalog pages. Move shared reporting setup into config/reporting.php and relocate stylesheet assets under css/.

private/languagestore.php

@@ -79,6 +79,43 @@ class LanguageStore
         return $fallback !== null ? (string)$fallback : $key;
     }
 
+    public function translateFormat($key, $language, $values = array(), $fallback = null)
+    {
+        return self::formatText($this->translate($key, $language, $fallback), $values);
+    }
+
+    public static function formatText($text, $values, $maxDepth = 8)
+    {
+        if (!is_array($values) || count($values) === 0) {
+            return (string)$text;
+        }
+
+        $text = (string)$text;
+
+        for ($depth = 0; $depth < $maxDepth; $depth++) {
+            $changed = false;
+
+            $next = preg_replace_callback('/\{\{\s*([A-Za-z0-9_.-]+)\s*\}\}/', function ($match) use ($values, &$changed) {
+                $name = $match[1];
+
+                if (!array_key_exists($name, $values)) {
+                    return $match[0];
+                }
+
+                $changed = true;
+                return (string)$values[$name];
+            }, $text);
+
+            $text = $next;
+
+            if (!$changed) {
+                break;
+            }
+        }
+
+        return $text;
+    }
+
     public function setTranslation($key, $language, $text)
     {
         $key = $this->safeKey($key);