Minor - format code.
Minor - fixing PHP warning.
Minor - fixing PHP warnings.
Minor - fixing PHP warning.
Fixing PHP warnings.
Minor - format code.
Removing 5.2 validations.
Minor - removing whitespaces.
Improving agenda UI, fixing event edition see BT#7803

Adding date-range-picker element in FormValidator.
Updating datetimepicker js library
Adding sabre-vobject ical library.
Merge