title: WordPress Media URL conflicts with Page URL
body: <p>If I upload a file <code>foo.pdf</code> to WordPress I can access it at <code>http://example.com/foo/</code>. (There is a simple HTML page with a link to the PDF file).</p>
  
  <p>If I then create a Page named <code>foo</code> I cannot view or preview the Page because the default URL, <code>http://example.com/foo/</code>, will resolve to the page for the PDF.</p>
  
  <p>How can I resolve this URL conflict?</p>