Fix parenthesis direction in RTL langauges.

In RTL langauages, the parenthesis are mirrored when displayed,
as they should be. Hence, the keyboard app needs to mirror such
chars so that at the end the user will get the char he pressed.

For now only Hebrew is supported/effected - for other RTL langauges,
I recommend trying to add them to the condition I added and verifying
the fix is applicable for them as well.

Change-Id: Ib2c14c96d5ee3f6f09819f6f81cedf8c69359d86