Fix hiding the blinking cursor on Firefox
Fix hiding the blinking cursor on Firefox

caret-color will be supported starting with Firefox 53, which is supposed to be
released on 08/14/2017. Defocusing the field by clicking outside works for now,
but it may become unscalable as different elements might have to be clicked. The
transparent cursor solution will work no matter what (TM).

NiGhTTraX/react-test-buffet,NiGhTTraX/react-test-buffet,NiGhTTraX/react-test-buffet