switched to use java.util.Date
WIP: fleshing out QuestionService
WIP: made NetworkService, QuestionService singletons. Added NetworkConstants class
added test project
WIP: adding QuestionServiceTest. Added Mockito
changed question and solution
deleted some files, implemented networkservice for get solutions
reconfigured paginated stuff
front-end changes to view the questions
network service parameters working
updated QuestionService to use subclassed PaginatedResults objects
JSON deserialization working for PaginatedQuestions and PaginatedSolutions
it's working (?)
added QuestionServiceIntegrationTest
getSolutions working
Merge pull request #38 from bkng/master

getQuestions and getSolutions stack functional/lightly tested