Collect all env vars in one, easy-to-find place (#1149)

* Collect all env vars in one, easy-to-find place

Past state:
* Default environement variables were stored in both client/package.json
and client/__tests__/e2e/config.js
* Constants that should have been linked--like the cellxgene server port
during testing--were repeated.

With this commit:
* All environment variables are parameterized
* All environment variables are packaged in default env files

* Move npm scripts to client Makefile

* Respond to feedback from @seve and @bkmartinjr

client/Makefile

@@ -1,3 +1,9 @@
+include ../common.mk
+
+DATASET := $(if $(DATASET),$(DATASET),../example-dataset/pbmc3k.h5ad)
+
+# Packaging
+
 .PHONY: clean
 clean:
 	rm -rf node_modules
@@ -14,7 +20,57 @@ install:
 build:
 	npm run build
 
+
+# Development convenience methods
+
+.PHONY: server-requirements
+server-requirements:
+	virtualenv -p python3 ../venv
+	source ../venv/bin/activate && \
+		pip install -r ../server/requirements-dev.txt && \
+		yes | pip uninstall cellxgene || true && \
+		pip install -e ..
+
+.PHONY: start-frontend
+start-frontend:
+	node server/development.js
+
+.PHONY: start-server
+start-server:
+	cellxgene launch -p $(CXG_SERVER_PORT) $(CXG_OPTIONS) $(DATASET)
+
+.PHONY: backend-dev
+backend-dev: server-requirements
+	source ../venv/bin/activate && $(MAKE) start-server
+
+.PHONY: backend-dev-anno
+backend-dev-anno: server-requirements
+	CXG_OPTIONS='--experimental-annotations' $(MAKE) backend-dev
+
+.PHONY: backend-dev-anno-ontology
+backend-dev-anno-ontology: server-requirements
+	CXG_OPTIONS='--experimental-annotations --experimental-annotations-ontology' \
+		$(MAKE) backend-dev
+
+.PHONY: e2e
+e2e:
+	node node_modules/jest/bin/jest.js \
+		--verbose false \
+		--config __tests__/e2e/e2eJestConfig.json \
+		e2e/e2e.test.js
+
+.PHONY: test
+test:
+	node node_modules/jest/bin/jest.js
+
+.PHONY: smoke-test
+smoke-test:
+	start_server_and_test '$(MAKE) start-server' $(CXG_SERVER_PORT) '$(MAKE) e2e'
+
+.PHONY: unit-test
+unit-test:
+	node node_modules/jest/bin/jest.js --testPathIgnorePatterns e2e
+
 # pass remaining commands through to npm run
 %:
 	npm run $(*)
-