add mitmachen as a page

fet2020/templates/base.html

@@ -105,6 +105,11 @@
                     <i class="fa-solid fa-bars"></i>
                 </button>
                 <ul id="navBarContent" class="navbar-content" x-bind="navBarContent" x-collapse.min.0px>
+                    {% get_flatpages '/mitmachen/' as pages %}
+                    {% if pages %}
+                        <li class="{% if '/mitmachen/' in request.path %}active{% endif %}"><a href="{{ pages.first.url }}">{{ pages.first.title }}</a></li>
+                    {% endif %}
+
                     <li class="{% if 'posts' in request.path %}active{% endif %}"><a href="{% url 'posts:index' %}">News</a></li>
                     <li class="{% if 'members' in request.path %}active{% endif %}"><a href="{% url 'members:index' %}">Fachschaft</a></li>
                     <li class="{% if 'gallery' in request.path %}active{% endif %}"><a href="{% url 'gallery:index' %}">Galerie</a></li>