title: Git command when translating files in Django
body: <p>I have an existing application in Django.
  I want to add a translation on the page.
  On page I have:</p>
  
  <pre><code>{% trans 'Projects'%}
  </code></pre>
  
  <p>In .po file I added:</p>
  
  <pre><code>#: templates/staff/site.html: 200
  msgid "Projects"
  msgid "Projekty"
  </code></pre>
  
  <p>Then executes the command:</p>
  
  <pre><code>django-admin.py compilemessages -l pl
  </code></pre>
  
  <p>After this command, I get an error:</p>
  
  <pre><code>CommandError: This Should Be Run script from the Django Git checkout or your project or app tree, or with the settings Specified module.
  </code></pre>