Copyright for ubuntu-system-settings source package in Trusty

Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: ubuntu-system-settings
Upstream-Contact: Alberto Mardegan 
Source: https://launchpad.net/ubuntu-system-settings

Files: *
Copyright: 2013 Canonical Ltd.
License: GPL-3
 On Debian systems, the complete text of the GNU General
 Public License version 3 can be found in `/usr/share/common-licenses/GPL-3'.

Files: plugins/background/aeg.jpg
Copyright: 2012 Tauno Erik
License: CC-BY-SA-3.0

Files: plugins/background/darkeningclockwork.jpg
Copyright: 2013 Matt Katzenberger
License: CC-BY-SA-3.0

License: CC-BY-SA-3.0
 This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
 Unported License. To view a copy of this license, visit
 http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
 Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.