test: add more quality checks.

The 2.10.0 release couldn't upload to PyPI because of ReStructured Text
errors. Add some checking so that we'll know next time.

Makefile

@@ -20,6 +20,8 @@ compile-sass:  ## Compile the Sass assets
 quality:  ## Run the quality checks
 	pycodestyle --config=.pep8 lti_consumer
 	pylint --rcfile=pylintrc lti_consumer
+	python setup.py -q sdist
+	twine check dist/*
 
 test:  ## Run the tests
 	mkdir -p var
@@ -71,4 +73,4 @@ dummy_translations: ## generate dummy translation (.po) files
 
 build_dummy_translations: dummy_translations compile_translations ## generate and compile dummy translation files
 
-validate_translations: build_dummy_translations detect_changed_source_translations ## validate translations
+validate_translations: build_dummy_translations detect_changed_source_translations ## validate translations
\ No newline at end of file

requirements/test.in

@@ -3,11 +3,13 @@
 
 -r base.txt               # Core dependencies for the cookiecutter
 
-ddt
 coveralls
-mock
+ddt
 django-pyfs
+djangorestframework
 edx_lint
+mock
 pycodestyle
-djangorestframework
+readme-renderer
+twine
 xblock-sdk