Replace horizon.utils with an angular one

    Horizon utilitaries are now fully integrated into the angular
application. The object horizon.utils is still available in the
application in order to keep the compatibility, it is a link to the
angular constant object.

Change-Id: I3d44c5c281a8e61e93f4d1b7c3b8b61c128e36ea
Implements: blueprint horizon-angular
Merge "Replace horizon.utils with an angular one"