Chuan/Chris - added BrowseQuestions JUnit test
Chris/Chuan - added partial JUnit tests for uses cases 3 and 6.
Finished 2 and 5.
Chris/Chuan - commented out some tests. Found duplicates.
Chris/Chuan - added sort by date tests.
Chuan/Chris - added tests for sorting by date, upvotes, and image.
Merge pull request #19 from 0nebit/master

Chris/Chuan partial JUnit