**UNSTABLE**
Commit 12/15/2014
- define the NDB model for answer and question
- define the RESTFUL route for question and answer
**UNSTABLE**
Commit 12/16/2014
- implemented backend logic for question CURD and vote
- implemented backend logic for answer CURD and vote
- implemented ajax call going from front end and backend
- added question and answer template for rendering purpose
**UNSTABLE**
Commit 12/16/2014
- Implemented infinite scroll(auto loading) for retrieving older questions