Add Upstart job to remove Libertine scope click
Created by: UniversalSuperBox
The unity8-dash uses a scope installed from a click before it will use one from a deb whether or not the deb version is newer. Unfortunately, users who have installed the Libertine scope while it was a click will be stuck with it when they upgrade to 16.04. This commit adds an Upstart job which checks if the libertine-scope.ubuntu click is installed, then removes it if it is.