Improving caching of static assets (#3591)

Makefile

@@ -268,9 +268,6 @@ package: build build-client
 	@# Package webapp
 	mkdir -p $(DIST_PATH)/webapp/dist
 	cp -RL $(BUILD_WEBAPP_DIR)/dist $(DIST_PATH)/webapp
-	mv $(DIST_PATH)/webapp/dist/bundle.js $(DIST_PATH)/webapp/dist/bundle-$(BUILD_NUMBER).js
-	sed -i'.bak' 's|bundle.js|bundle-$(BUILD_NUMBER).js|g' $(DIST_PATH)/webapp/dist/root.html
-	rm $(DIST_PATH)/webapp/dist/root.html.bak
 
 	@# Help files
 ifeq ($(BUILD_ENTERPRISE_READY),true)