Reverted "ar" and "are" to their original location

Reverted "ar" and "are" to their original location as this reduces
chances of errors and allows adding fingers to this chord while typist
is realizing that more letters can be typed in one chord.
Added Mac shortcut Cmd+Alt+i

Added Mac shortcut NUM+ALT+i(LeftGUI+LeftAlt+i) as Cmd+Alt+i (used to
open Chrome DevTools).