Restored serving of spinx _images

This is a partial revert of efc51e8.
Due to an unfortunate conflict in the nginx configuration of
the server after the deploying of the commit mentioned above,
the _images directory ended up still being served by Django
which added a / to the end of the image path, using a permanent
HTTP redirection (because of settings.APPEND_SLASH).
The solution (hopefully temporary) is to restore the serving
of images by Django while we figure out how to configure
nginx to keep serving the _images and handled the old cached
redirections with a trainling slash.

Author: bmispelon

docs/urls.py

@@ -22,6 +22,11 @@
         {"url": ""},
         name="document-index",
     ),
+    re_path(
+        r"^(?P<lang>[a-z-]+)/(?P<version>[\w.-]+)/_images/(?P<path>.*)$",
+        views_debug.sphinx_static,
+        {"subpath": "_images"},
+    ),
     re_path("^(.*)/index/$", views.redirect_index),
     re_path(
         r"^(?P<lang>[a-z-]+)/(?P<version>[\w.-]+)/search/$",
@@ -54,7 +59,7 @@
             views_debug.objects_inventory,
         ),
         re_path(
-            r"^(?P<lang>[a-z-]+)/(?P<version>[\w.-]+)/(?P<subpath>_downloads|_images|_source)/(?P<path>.*)$",  # noqa: E501
+            r"^(?P<lang>[a-z-]+)/(?P<version>[\w.-]+)/(?P<subpath>_downloads|_source)/(?P<path>.*)$",  # noqa: E501
             views_debug.sphinx_static,
         ),
         re_path(r"^pots/(?P<pot_name>\w+\.pot)$", views_debug.pot_file),