title: 'verbose_name': _('Small screens') NameError: name '_' is not defined
body: <p>After installation django-responsive2 as <a href="https://django-responsive2.readthedocs.io/en/latest/readme.html" rel="nofollow noreferrer">django-responsive2</a>, i got following error:</p>
  <pre><code>'verbose_name': _('Small screens')
  NameError: name '_' is not defined
  </code></pre>
  <p>I use
  <code>from django.utils.translation import gettext_lazy as _</code>.
  I got this error:</p>
  <pre><code>mw_instance = middleware(adapted_handler)
  TypeError: object() takes no parameters 
  </code></pre>
  <p>Next i used</p>
  <pre><code>from django.utils.translation import gettext_lazy
  'verbose_name': gettext_lazy('Small screens')
  </code></pre>
  <p>but i got previous error again.
  finally i used <code>'verbose_name': 'Small screens'</code> and got this error:</p>
  <p><a href="https://i.stack.imgur.com/W0Cex.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/W0Cex.jpg" alt="enter image description here" /></a></p>
  <p>MIDDLEWARE is:</p>
  <pre><code>MIDDLEWARE = [
          'django.middleware.security.SecurityMiddleware',
          'django.contrib.sessions.middleware.SessionMiddleware',
          'django.middleware.common.CommonMiddleware',
          'django.middleware.csrf.CsrfViewMiddleware',
          'django.contrib.auth.middleware.AuthenticationMiddleware',
          'django.contrib.messages.middleware.MessageMiddleware',
          'django.middleware.clickjacking.XFrameOptionsMiddleware',
          'responsive.middleware.ResponsiveMiddleware',
      ]
  </code></pre>