ENYO-1122: Add "accessibilityLabel" to enyo control
ENYO-1122: Add "accessibilityLabel" to enyo control

The "accessibilityLabel" property covers ARIA attribute "aria-label".
If "accessibilityLabel" is set, add "aria-label" and make the control
tabbable by setting a tabindex=0.
Screen reader reads "aria-label" when the control is focused.

https://jira2.lgsvl.com/browse/ENYO-1122
Enyo-DCO-1.1-Signed-off-by: Jaewon Jang jaewon98.jang@lgepartner.com

enyojs/enyo,enyojs/enyo,PKRoma/enyo,PKRoma/enyo