ivle.interpret: Fixed calls to Popen: Unicode strings are encoded as UTF-8. This fixes serve of non-executable files, but serve-of-python, diff, log and download still break on files with a unicode filename.
<py:for each="segment in paths">/<a href="${segment['href_path']}" title="Navigate to ${segment['nav_path']}">${segment['path']}</a></py:for> (Subversion log)