message: Remove navigation elements on embedded help builds (like htmlhelp)
diff: {% block extrabody %} {% endblock %}
  <div class="wy-grid-for-nav">
  {# SIDE NAV, TOGGLES ON MOBILE #}
  + {%- if not embedded %}
  <nav data-toggle="wy-nav-shift" class="wy-nav-side">
  <div class="wy-side-scroll">
  <div class="wy-side-nav-search" {% if theme_style_nav_header_background %} style="background: {{theme_style_nav_header_background}}" {% endif %}>
  {% endblock %}
  </div>
  </nav>
  + {%- endif %}
  <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
  {# MOBILE NAV, TRIGGLES SIDE NAV ON TOGGLE #}
  + {% if not embedded %}
  <nav class="wy-nav-top" aria-label="top navigation">
  {% block mobile_nav %}
  <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
  <a href="{{ pathto(master_doc) }}">{{ project }}</a>
  {% endblock %}
  </nav>
  + {% endif %}
  <div class="wy-nav-content">
  {% else %}
  <div class="rst-content">
  {% endif %}
  + {# Don't show breadcrumbs on embedded #}
  + {% if not embedded %}
  {% include "breadcrumbs.html" %}
  + {% endif %}
  <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
  {%- block document %}
  <div itemprop="articleBody">
  