Updated openstack/openstack
Project: openstack/horizon  2deea56297dc7d65f5db1215dfb46010e96bb122
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Adds meta and head-js partials to head in base.html

Allows users to add custom meta tags or javascripts to the base template

Implements: blueprint customizable-head
Change-Id: I40df3705a7ebe135d0f2843e1dcaa07e4ebcaaed