cms/landing page: add donate button to hero block if link is set in s…

…ettings

apps/cms/pages/templates/a4_candy_cms_pages/home_page.html

@@ -13,11 +13,13 @@ <h1 class="homepage-header__teaser ml-md-4">{{ page.teaser|richtext }}</h1>
                     <img src="{{ image.url }}" alt="{{ image.alt }}" class="homepage-header__image" />
                 </div>
             </div>
+            {% if settings.a4_candy_cms_settings.ImportantPages.donate_link %}
             <div class="row">
                 <div class="col-lg-6 offset-lg-6 d-flex">
-                    <a class="btn btn--full btn--secondary-filled homepage-header__btn" href="">{% trans 'Filler text which will be changed in settings' %}<br><b>{% trans 'Donate Now' %}</b></a>
+                    <a class="btn btn--full btn--secondary-filled homepage-header__btn" href="{{ settings.a4_candy_cms_settings.ImportantPages.donate_link.url }}">{% trans 'Support the further development of the platform' %}<br><b>{% trans 'Donate Now' %}</b></a>
                 </div>
             </div>
+            {% endif %}
         </div>
 
         <div>{{ page.body|richtext }}</div>

liqd_product/templates/footer.html

@@ -51,7 +51,7 @@
         </div>
         {% if pages.donate_link %}
         <div class="col-12 col-sm-6 offset-sm-6 offset-lg-0 d-flex flex-column px-0 pl-sm-3">
-            <a href="{{ pages.contact.url }}"  class="btn btn--full btn--secondary-filled mb-0 mr-0">{% trans 'Support the further development of the platform' %}<br><b>{% trans 'Donate now' %}</b></a>
+            <a href="{{ pages.donate_link.url }}"  class="btn btn--full btn--secondary-filled mb-0 mr-0">{% trans 'Support the further development of the platform' %}<br><b>{% trans 'Donate now' %}</b></a>
         </div>
         {% endif %}
     {% endwith %}