nits
http://codereview.appspot.com/223109/diff/6001/4004 File features/src/main/javascript/features/core.json/json.js (right): http://codereview.appspot.com/223109/diff/6001/4004#newcode56 features/src/main/javascript/features/core.json/json.js:56: if (!/___$/.test(k)) worth precompiling regex? http://codereview.appspot.com/223109/diff/6001/4004#newcode57 features/src/main/javascript/features/core.json/json.js:57: return v; worth explicitly returning null? per https://developer.mozilla.org/En/Using_JSON_in_Firefox, only "null" is explicitly labeled as kosher for filtering. http://codereview.appspot.com/223109/diff/6001/4003 File java/server/src/test/java/org/apache/shindig/server/endtoend/EndToEndTest.java (right): http://codereview.appspot.com/223109/diff/6001/4003#newcode242 java/server/src/test/java/org/apache/shindig/server/endtoend/EndToEndTest.java:242: executeAllPageTests("osapi/appdataTest", true /* caja */); nit: separate into 2 tests http://codereview.appspot.com/223109/show
