Add documentation about tables in templates

docs/dev/04_materialize_templates.rst

@@ -37,10 +37,12 @@ The following snippet generates the form::
 
     <form method="post" enctype="multipart/form-data">
         {% csrf_token %}
-        {% form form=form %}{% endform %}
+        {% form form=edit_person_form %}{% endform %}
         {% include "core/partials/save_button.html" %}
     </form>
 
+``edit_person_form`` is the variable name of the form in your ``context``.
+
 ``{% include "core/partials/save_button.html" %}`` includes a template snippet
 from AlekSIS core.  You can modify the buttons icon and translatable caption
 like this::
@@ -69,5 +71,17 @@ In your ``forms.py`` you can configure the layout of the fields like in the Edit
         ),
     )
 
+Tables in templates
+-------------------
+
+To display tables generated by ``django-tables2`` in your template, you have to load the ``render_table`` template tag from ``django_tables2``::
+
+    {% load render_table from django_tables2 %}
+
+After you've loaded the template tag, you can simply generate the table like this::
+
+    {% render_table persons_table %}
+
+``persons_table`` is the variable name of the table in your ``context``.
 
 .. _MaterializeCSS: https://materializecss.com/