Merge pull request #15 from phuongnq/master

new source code
Add scrollView to QuestionView Controller

Expand the view of QuestionView in order to display all the contents
including moviePlayer,
Merge pull request #16 from phuongnq/master

add home page after logged in
Add visibility into answerVideo

Users can choose their answerVideos’ visibility when upload to server:
onlyMe, friendOnly, open.
In News Feed, user only see other user’s open answerVideos.
We will need to deal with friendOnly videos, may be from News Feed with
filter.
Rename old web code folder
web version heroku