chore: deprecate edx-sphinx-theme (#209)

* chore: deprecate edx-sphinx-theme

Makefile

@@ -62,7 +62,7 @@ quality-python: ## Run python linters
 	tox -e quality
 
 quality-rst: ## validate rst files
-	rstcheck -r --report-level warning .
+	rstcheck -r --report-level warning --ignore-directives=toctree --ignore-roles=ref .
 
 quality: quality-python quality-rst ## Run linters
 

docs/Makefile

@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)