Fixes broken icons in firefox

This fixes COUCHDB-2288
Configure zeroclipboard for deployment

Move zeroclipboard into its own component. Handle the location of
zeroclipboard for Fauxton deployment and Also allow the moviepath to
be overriddern for custom deployment locations.
remove unneeded z-index
Upgrade d3 to version 3.4.11
Sidebar: Do not show version on a collapsed view

There is not enough space for showing the version on a collapsed
sidebar.

COUCHDB-2234