Updated folder structure and namespaces to be consistent with folder names and to shorten length of file name and project file names.  Also set the default route as the QuestionController Index action
Added test project for Nova.Core as Nova.Core.Tests.  It uses xUnit testing framework with moq as the mocking framework and autofixture for automating fixture setup
Added Interfaces, CommandHandler, IQuery, and IQueryHandler, for use by concrete command and query implementations
Added a PostQuestion command and command handler.  Updated the SaveNew Action to use the new Command instead of the deprecated QuestionService
Added queries and query handlers for GetQuestionById and GetAllQuestions.  Updated Question controller to use new queries for loading the question listing and the question overview views