Update Makefile

Temporarily remove -W sphinxbuild flag (line 86) to have all languages build for now.

Makefile

@@ -83,7 +83,7 @@ html: localizeresources
 	$(SPHINXINTL) build -l $(LANG) -c $(SOURCEDIR)/conf.py
 	#  -n   Run in nit-picky mode. Currently, this generates warnings for all missing references.
 	#  -W   Turn warnings into errors. This means that the build stops at the first warning and sphinx-build exits with exit status 1.
-	$(SPHINXBUILD) -nW -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html/$(LANG)
+	$(SPHINXBUILD) -n -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html/$(LANG)
 	@echo
 	@echo "HTML Build finished. The HTML pages for '$(LANG)' are in $(BUILDDIR)."