1) Passport deserializeUser retrieves the user from DB via id
2) Modify all the tmeplate (ejs) files accordingly (since req.user is not the database entity)
3) Minor: Changed request and response to req and res in web.js
4) Removed explicit setting of req.user.candidateType while signUp process
5) Send error when DynamoDB throws Exception (while submitting the interviewer settings form)