profile: port picture code to qt-quick

This was very painful, because I had to implement rearranging the
paint order of the QSGNodes. The resulting code appears quite
brittle. Let's see where that brings us.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

profile-widget/zvalues.h

@@ -12,6 +12,7 @@
 struct ProfileZValue {
 	enum ZValues {
 		Profile = 0,
+		Pictures,
 		ToolTipItem,
 		Count
 	};