contacts: Don't mix contacts and contactsraw

The template personal/list is used by contacts and contactsraw. However
the group filter uses the absolut url {% url 'contacts' %} which jumps back
to reverse mapping of "contacts". Additionally, "name="contacts" was
registered for both urlpatterns /contacts and /contactsraw, so it
resolves to /contactsraw. This makes us effectively jump to contactsraw
whenever the group filter is changed.

Give /contacts and /contactsraw urlpatterns different name attributes.

Use relative URLs with just a replaced query string for the group
filter links.

config/urls.py

@@ -44,7 +44,7 @@
     path('api/v2/', api_router.urls),
     path('logout', LogoutView.as_view(), name='logout'),
     path('contacts/', ContactListView.as_view(), name='contacts'),
-    path('contactsraw/', RawContactListView.as_view(), name='contacts'),
+    path('contactsraw/', RawContactListView.as_view(), name='contactsraw'),
 
     path('events/ics', ics_view, name='ics')
 ] + static(

mpicms/templates/personal/list.html

@@ -18,13 +18,13 @@ <h1 class="title has-text-centered">{% trans 'Contact List' %}</h1>
                 <div class="dropdown-content">
 
                 {% for group in groups %}
-                    <a href="{% url 'contacts' %}?group={{ group.pk }}" class="{% if group.pk|stringformat:'d' == request.GET.group %}is-active {% endif %}dropdown-item">
+                    <a href="?group={{ group.pk }}" class="{% if group.pk|stringformat:'d' == request.GET.group %}is-active {% endif %}dropdown-item">
                         {{ group }}
                     </a>
                 {% endfor %}
 
                 <hr class="dropdown-divider">
-                <a href="{% url 'contacts' %}" class="dropdown-item">
+                <a href="?" class="dropdown-item">
                     {% trans 'Reset filter' %}
                 </a>
                 </div>