Merge pull request #104 from dcs24/master

Tests and getUserId
WIP: getQuestionById()
WIP: Test for Question and Solution CRUD
comments for QuestionServiceIntegrationTest
CRUD for Question, Solution (TDD)
switch to using Lists of questionIds
add test user constant
temporarily use dummy credentials to post questions and solutions
code review changes
Merge pull request #105 from bkng/develop

round trip CRUD for question (in progress)
tee hee
added android code support and tests for getting questions by id. doesn't pass the tests yet