Added features for iteration 5. This includes...
 - ToDoController
 - ToDoItem, ToDoItemRepository, ToDoItemContext
 - Create.cshtml / create.js / css
 - New dependency: bootstrap datepicker
 - Initial Unit tests

Removed bootstrap dependencies (bootstrap-theme.css, bootstrap.css, bootstrap.js) that are currently unused.
Fixed issue with CountDownMembershipProvider name in repo.
Fixed wrong iteration numbers in category tags.