setting up AJAX endpoint for lab
setting up AJAX endpoint for lab


Former-commit-id: 0527e26f73b4c93b281abdc676c6190df0342f84
Former-commit-id: 6d29efa88145953f1afe520e22be84a8709ec499
Former-commit-id: 03ddd5e04a8f6cf4626a33bc63d73b18629331a3
StanfordHCI/cs247,StanfordHCI/cs247,StanfordHCI/cs247