ENYO-2264: integrate tab bar with menu into Ares

* ENYO-2264: nail down bottom bar's z-index for Safari
* ENYO-2264: integrate tab bar with menu into Ares

Tested on Linux FF Chromium, Mac Safari and Opera, Win7 IE10

Enyo-DCO-1.1-Signed-off-by: Dominique Dumont <dominique.dumont@hp.com>