SDK-15413: Fix ASDoc for DateChooser.displayedYear. Also removed legacy @helpid, @tiptext ASDoc directives.
SDK-18682: Ensure selectedItem and selectedItems show up in code hints for List-based components.
SDK-19485: requiresSelection and allowMultipleSelection are legit properties on List now. Multiple selection support is coming in a subsequent checkin, but now list doesn't RTE when those two props are set.
QA: Yes, tests for requiresSelection should be added to the Spark List testsuite.
Checkintests: Yes, pass