title: Can't change pelican theme
body: <p>I'm trying to change default pelican theme to <a href="https://github.com/jody-frankowski/blue-penguin/tree/fb1508845764d1e7bde71863f2540fa1829b470a" rel="nofollow">this one</a>.
  However changes do not appear when I use</p>
  
  <pre><code>python -m SimpleHTTPServer
  </code></pre>
  
  <p>I installed the theme using <code>pelican-themes --install</code> and I can say that installation went all right because when I run <code>pelican-themes -l</code> the theme is listed:</p>
  
  <pre><code>notmyidea
  simple
  blue-penguin
  </code></pre>
  
  <p>I added this to my pelicanconf.py:</p>
  
  <pre><code>THEME = "blue-penguin"
  </code></pre>
  
  <p>And it's not the browser cache because I also added this:</p>
  
  <pre><code>LOAD_CONTENT_CACHE = False
  </code></pre>
  
  <p>I tried running</p>
  
  <pre><code> pelican content -s ../pelicanconf.py
  </code></pre>
  
  <p>but had no result.</p>
  
  <p>Even using trying the default themes <code>notmyidea</code> and <code>simple</code> doesn't work.</p>
  
  <p>Any idea of what is going on?</p>
  
  <p><strong>EDIT:</strong> adding my pelicanconf.py, as requested:</p>
  
  <pre><code>#!/usr/bin/env python
  #-*- coding: utf-8 -*- #
  from __future__ import unicode_literals
  
  AUTHOR = u'My Name'
  SITENAME = u'Programa\xe7\xe3o, estat\xedstica e mais'
  SITEURL = ''
  GITHUB_URL = 'http://github.com/EuPaulo'
  LOCALE = 'pt_BR.utf8'
  THEME = u"blue-penguin"
  LOAD_CONTENT_CACHE = False
  
  RELATIVE_URLS = True
  
  PATH = 'content'
  
  TIMEZONE = 'America/Sao_Paulo'
  
  DEFAULT_LANG = u'pt'
  
  # Feed generation is usually not desired when developing
  FEED_ALL_ATOM = None
  CATEGORY_FEED_ATOM = None
  TRANSLATION_FEED_ATOM = None
  AUTHOR_FEED_ATOM = None
  AUTHOR_FEED_RSS = None
  
  # Blogroll
  # LINKS = (('Pelican', 'http://getpelican.com/'),
   #        ('Python.org', 'http://python.org/'),
    #       ('Jinja2', 'http://jinja.pocoo.org/'),
     #      ('You can modify those links in your config file', '#'),)
  
  # Social widget
  SOCIAL = (('twitter', 'https://twitter.com/paulomiramor'),
            ('linkedin', 'http://www.linkedin.com/in/XXXXXXX'),
            ('github', 'https://github.com/EuPaulo'),)
  
  DEFAULT_PAGINATION = 5
  </code></pre>