docs: acknowledge sponsors in sidebar

docs/Makefile

@@ -11,7 +11,7 @@ PAPER         =
 PAPEROPT_a4     = -D latex_paper_size=a4
 PAPEROPT_letter = -D latex_paper_size=letter
 #ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) source
-ALLSPHINXOPTS   = -j 1 source
+ALLSPHINXOPTS   = -j 3 source
 #ALLSPHINXOPTS   = source
 BUILDDIR        = $(filter-out $@, $(MAKECMDGOALS))
 

docs/_templates/sponsors.html

@@ -0,0 +1,19 @@
+{#
+  Acknowledge sponsors in sidebar.
+#}
+
+<br>
+cfdm development has been supported by
+the <a href="https://erc.europa.eu/">ERC</a>
+through <a href="https://cordis.europa.eu/project/id/247220">Seachange</a>,
+<a href="https://cordis.europa.eu/project/id/786427">Couplet</a>, and
+<a href="https://cordis.europa.eu/project/id/824084">IS-ENES3</a>;
+by <a href="https://nerc.ukri.org/">NERC</a> through
+<a href="https://gtr.ukri.org/project/0D95A6DB-0B95-48F7-8A8B-7B9A47DEA117">UKFAFMIP</a>;
+and by <a href="https://ncas.ac.uk/">NCAS</a>.
+<br>
+<br>
+<img src="../_templates/logo_ERC.png" height="50">
+<img src="../_templates/logo_NERC.png" height="45">
+<br>
+<img src="../_templates/logo_NCAS.png" height="40">

docs/source/conf.py

@@ -330,7 +330,7 @@ def _get_date():
         "searchbox.html",
         "globaltoc.html",
         "relations.html",
-        # 'sourcelink.html',
+        "sponsors.html",  # file found in docs/_templates
     ]
 }
 

docs/source/index.rst

@@ -36,4 +36,3 @@
 
 * :ref:`genindex`
 * :ref:`Search <search>`
-