Change the default design/functionality of the Kubuntu login screen (KDM) and desktop start-up splash screen (ksplash).

Every release of Kubuntu offers a fresh visual look and feel of some key elements. These elements highlight the feeling of the new edition and sometimes relate to some of the elements present in the release. To remain within this trend, the login screen (KDM) and desktop start-up splash screen (ksplash) should be updated. In addition, we should add a feature allowing users to select their username with a graphical representation (icon and text) per mouse click (limited to setups of a predetermined number of users)