Add stubs to make redirects from swh-dataset to swh-export work

docs/.gitignore

 *-stamp
 _build/
 devel/swh-*
+!devel/swh-dataset
 errors.log
 !/swh-loader.rst
 sources/

docs/devel/swh-dataset/export.rst

+:orphan:
+
+This page was moved to: :ref:`swh-graph-export`.

docs/devel/swh-dataset/generate_subdataset.rst

+:orphan:
+
+This page was moved to: :ref:`swh-graph-export-subdataset`.

docs/devel/swh-dataset/graph/athena.rst

+:orphan:
+
+This page was moved to: :ref:`swh-graph-athena`.
+

docs/devel/swh-dataset/graph/dataset.rst

+:orphan:
+
+This page was moved to: :ref:`swh-export-list`.

docs/devel/swh-dataset/graph/schema.rst

+:orphan:
+
+This page was moved to: :ref:`swh-export-schema`.

docs/devel/swh-dataset/index.rst

+:orphan:
+
+This page was moved to: :ref:`swh-export`.

swh/docs/sphinx/conf.py

@@ -218,7 +218,6 @@ redirects = {
     "swh-dataset/graph/dataset.html": "swh-export/graph/dataset.html",
     "swh-dataset/graph/schema.html": "swh-export/graph/schema.html",
     "swh-dataset/graph/athena.html": "swh-export/graph/athena.html",
-    "swh-dataset/graph/databricks.html": "swh-export/graph/databricks.html",
     "swh-dataset/export.html": "swh-export/export.html",
     "swh-dataset/generate_subdataset.html": "swh-export/generate_subdataset.html",
     "apidoc/swh.dataset.html": "apidoc/swh.export.html",