ENYO-1189: Add a [Details…] button to the generic Ares.ErrorPopup
ENYO-1189: Add a [Details…] button to the generic Ares.ErrorPopup

- The button (and associated Drawer) are shown only if the details
  property is not falsy.

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>

mcanthony/ares-project,enyojs/ares-project,mcanthony/ares-project,mcanthony/ares-project,enyojs/ares-project,enyojs/ares-project,enyojs/ares-project,mcanthony/ares-project,mcanthony/ares-project,enyojs/ares-project,mcanthony/ares-project