Added loop property to Presentation in calamares.slideshow QML module.

src/qml/calamares/slideshow/Presentation.qml

@@ -51,6 +51,7 @@ Item {
 
     property bool showNotes: false;
     property bool allowDelay: true;
+    property bool loop: true;
 
     property color titleColor: textColor;
     property color textColor: "black"
@@ -103,6 +104,16 @@ Item {
                 root.focus = true;
             }
         }
+        else {
+            if (root.loop) {
+                var from = slides[currentSlide]
+                var to = slides[0]
+                if (switchSlides(from, to, true)) {
+                    currentSlide = 0;
+		    root.focus = true;
+                }
+            }
+        }
     }
 
     function goToPreviousSlide() {