Implemented "create new" and "edit" forms for timelines with new UI.

__Link to code review:__ http://mrccodereview.cloudapp.net/ui#review:id=1127

Implemented "create new" and "edit" timeline forms in new UI.

Removed scalable padding/margin for ui-forms. Overall update of ui-forms classes in css.

Few updates in datepicker control and sample datepicker page.