* Completed adding and delete days for courses.
* Adding jquery UI datepicker for that.
* Adding "cleared" are for bookings of a training (CoursesTerm).
* Adding days add + remove to UI.
* General enhancement and UI clean ups.
* Replacing "contains" queries by handwritten SQL for performance optimization.
* Adding datepicker to require.js loader.
* Adding "note" method to FrontendHelper.php
* Minor CSS changes.
* More UI cleanups and changes.
* Adding current db schema modeler file.