BUGFIX: was using the Bacbone.Model.set() incorrectly casuing empty models to fail when programmaticaly added
centralixing the default PostIt location into a variable; so it is easier to override and/or be changed at runtime
migrated focus event listeners and handlers from MainBoard to PostItView
migrated blur event listeners and handlers from MainBoard to PostItView
removing globals used for debugging
removing console logs used for debugging
migrated dragestop event listeners and handlers from MainBoard to PostItView
REFACTOR: changed the way DOM attributes were added to the PostItView
removed old dragstop handler from MainBoard View
BUGFIX: the close button for PostIt's wasn't working
migrated click event listeners and handlers that delete a from MainBoard to PostItView
REFACTOR: changed the way attributes are set on the DOM element