Remove config.js from client bundle

client/scripts/test.js

@@ -6,7 +6,7 @@ process.exit(0);
 // Do this as the first thing so that any code reading it knows the right env.
 process.env.BABEL_ENV = 'test';
 process.env.NODE_ENV = 'test';
-process.env.PUBLIC_URL = '';
+process.env.BASE_URI = '';
 
 // Makes the script crash on unhandled rejections instead of silently
 // ignoring them. In the future, promise rejections that are not handled will