Site.css
 - Removed bad checkbox style

ToDoController
 - Fixed issue with assignee list when attempting to create an invalid todo item

ToDoItemRespository
 - FindById now uses the Find(..) method to locate a todo item
Added Feature 14. This includes...
 - Update and Cancel actions in ToDoController
 - New routes
 - Index page and CSS changes for messaging
 - Changes to Start, Due, and TimeLeft properties in ToDoItem. These are reflected in ToDoItemRepository and Index.cshtml
 - More functionality and javascript in the Edit page
 - Unit tests