Encoding error on precessing service description with non ascii chars

[Mario Benito]

Here is the traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/ladon/server/wsgi_application.py", line 483, in __call__
    languages,skin)
  File "/usr/local/lib/python2.7/dist-packages/ladon/server/wsgi_application.py", line 374, in generate_service_html
    return template.render(service_info).encode(charset)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 969, in render
    return self.environment.handle_exception(exc_info, True)
  File "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 742, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "<template>", line 26, in top-level template code
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 22: ordinal not in range(128)

After cleaning service description from non ascii chars, everything goes fine.