#160017773 Build out REST Endpoints for Resources (CRUD)

[sudhons]

What does this PR do?

Implements necessary url routes for CRUD operations

Description of Task to be completed?

Perform CRUD operations on the following url endpoints:
Questions

GET /api/v1/questions
POST /api/v1/questions
GET /api/v1/questions/:qtnId
UPDATE /api/v1/questions/:qtnId
DELETE /api/v1/questions/:qtnId

Answers

POST /api/v1/questions/:qtnId/answers
GET /api/v1/questions/:qtnId/answers/:ansId
UPDATE /api/v1/questions/:qtnId/answers/:ansId
DELETE /api/v1/questions/:qtnId/answers/:ansId

How should this be manually tested?

This can be tested on heroku here

What are the relevant pivotal tracker stories?

#160017773