Card view: basic list view.

Signed-off-by: Christophe Chapuis <chris.chapuis@gmail.com>
QML mockup: refactoring of the components of the UI

 * Separated the main QML descripting into several component files
 * Moved each main component of the UI into its own sub-directory
 * Added a possibility to flick vertically the current card window

Signed-off-by: Tofe <chris.chapuis+gitorious@gmail.com>