Move node tests to node_tests/.

docs/testing.rst

@@ -114,7 +114,7 @@ bottom of ``foobar.js``:
 This makes ``foobar.js`` follow the CommonJS module pattern, so it can
 be required in Node.js, which runs our tests.
 
-Now create ``frontend_tests/node/foobar.js``. At the top, require
+Now create ``frontend_tests/node_tests/foobar.js``. At the top, require
 the `Node.js assert module <http://nodejs.org/api/assert.html>`__, and
 the module you're testing, like so:
 

tools/test-js-with-node

@@ -4,7 +4,7 @@ cd "$(dirname "$0")"/..
 
 export NODE_PATH=/usr/lib/nodejs:static
 
-INDEX_JS=frontend_tests/node/index.js
+INDEX_JS=frontend_tests/node_tests/index.js
 NODEJS=$(which nodejs || which node)
 if [ "$1" = "cover" ]; then
   # Run a coverage test with Istanbul.