Refactor: split code into several django apps (we call them modules).

dav_base/views.py

@@ -0,0 +1,23 @@
+from django.conf import settings
+from django.urls import reverse, NoReverseMatch
+from django.views import generic
+
+
+class RootView(generic.TemplateView):
+    template_name = 'dav_base/root.html'
+
+    def get_context_data(self, **kwargs):
+        c = super(RootView, self).get_context_data(**kwargs)
+        root_urls = []
+        for module_meta_obj in settings.MODULE_CONFIG.modules.values():
+            root_url_name = 'root'
+            if module_meta_obj.url_namespace:
+                root_url_name = '%s:%s' % (module_meta_obj.url_namespace, root_url_name)
+            try:
+                reverse(root_url_name)
+                root_urls.append((module_meta_obj.app, root_url_name))
+            except NoReverseMatch:
+                pass
+
+        c['root_urls'] = root_urls
+        return c