Adds a source-package and uglify targets to the makefile.

Makefile

 	cp $(OUTPUT_DIR)/*.bundle.js $(DEPLOY_DIR) && \
 	./bump-js-versions.sh && \
 	([ ! -x deploy-local.sh ] || ./deploy-local.sh)
+
+uglify:
+	uglifyjs libs/app.bundle.js -o libs/app.bundle.min.js --source-map libs/app.bundle.js.map
+	rm -f libs/app.bundle.js
+
+source-package:
+	mkdir -p source_package/jitsi-meet && \
+	cp -r analytics.js app.js css external_api.js favicon.ico fonts images index.html interface_config.js libs plugin.*html sounds title.html unsupported_browser.html LICENSE config.js lang source_package/jitsi-meet && \
+	(cd source_package ; tar cjf ../jitsi-meet.tar.bz2 jitsi-meet) && \
+	rm -rf source_package