* Update debhelper compat to level 9.
* Update standards-version to 3.9.5.
* qlubuntu-default-session: Alternatively depend on lxqt-lightdm-greeter.
* d/copyright: Update to copyright format 1.0, update copyright years.
* d/copyright: Set Julien Lavergne as Upstream-Contact.
* d/maintscript: Move lightdm config to usr/share, this follows standard
lightdm config such that the file is removed when the package is.
* Move d/20-*.conf to src/usr/share/lightdm/lightdm.conf.d/
* d/rules: Call dh_install with --fail-missing.
* 20-qlubuntu.conf: The session name is QLubuntu, not qlubuntu.
