Added comment to $rootScope animation variables.
Better naming of datepicker/day slides functions.
Refactored daySlideChangeStart|End callbacks to be agnostic about day slide content.
Refactored datepickerSlideChangeStart|End callbacks to be agnostic about day slide content. Also set global variables as parameters to functions in DatesController.
Added 'no date' slide to focus tasks slides. Minor tweaks.