GCI-31 - Navigation bar revamp

Ticket: http://issues.openmrs.org/browse/GCI-31
Melange task:
https://www.google-melange.com/gci/task/view/google/gci2014/5666446822604800
Merge branch 'gci-31-2' of https://github.com/Izaron/openmrs-contrib-id into gci-31-2