Merge branch '419-2-neue-buttons-auf-landing-page' into 'master'

Resolve "2 neue buttons auf landing page"

Closes #419

See merge request !401

discuss_data/templates/landingpage/base_landing_page.html

@@ -55,7 +55,7 @@
                     <a href="{% url 'ddusers.dashboard_page' %}" class="btn btn-success btn-lg">{% trans "Enter Discuss Data" %}</a>
                   {% else %}
                     <a href="{% slugurl 'how-do-i-register' %}" class="btn btn-primary btn-lg">{% trans "How to register" %}</a>
-                    <a href="{% url 'shibboleth:login' %}" class="btn btn-success btn-lg">{% trans "Sign In" %}</a>
+                    <a href="{% url 'core.login_page' %}" class="btn btn-success btn-lg">{% trans "Sign In" %}</a>
                   {% endif %}
               </div>
               <div class="col-6"></div>