title: Cakephp 403 error not displaying custom page
body: <p>I receive the standard apache 403 error page when navigating to places in mysite.com/img which translates to app/webroot/img.</p>
  
  <p>I am using Cakephp 2.x and have setup the custom error400.ctp which works correctly for 404 errors as far as I have tested.</p>
  
  <p>Is this an htaccess problem that is not letting cakephp handle the error? How do I get the error400.ctp page to show without hardcoding the path in .htaccess?</p>
  
  <p>Here is my app/webroot .htaccess file</p>
  
  <pre><code>&lt;IfModule mod_rewrite.c&gt;
      RewriteEngine On
      RewriteCond %{REQUEST_FILENAME} !-d
      RewriteCond %{REQUEST_FILENAME} !-f
      RewriteRule ^(.*)$ index.php [QSA,L]
  &lt;/IfModule&gt;
  </code></pre>
  
  <p>Thanks!</p>