8159690: [TESTBUG] Mark headful tests with @key headful.
Reviewed-by: simonis, alexsch

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

4685768: A11y issue - Focus set to disabled component, can't Tab/Shift-Tab
Summary: The restore-focus procedure should skip disabled components.
Reviewed-by: art, dcherepanov