Add a poolMode property to QML

Pools don't need infinite scrolling, so set a property which will be
handled from C++ to disable the behavior.

TODO: Ensure that pools with items > 100 are handled.

src/qml/danbooruimageview.qml

@@ -32,6 +32,8 @@ Rectangle {
     width: 500
     height: 500
 
+    property bool poolMode: false;
+
 
     KRun {
         id: runner
@@ -202,8 +204,8 @@ Rectangle {
             Component.onCompleted: { currentIndex = -1; forceActiveFocus()}
 
             onAtYEndChanged: {
-                if (grid.atYEnd) {
-                    danbooruService.nextPostPage()
+                if (grid.atYEnd && danbooruModel.rowCount > 0 && !rootObj.poolMode) {
+                     danbooruService.nextPostPage()
                 }
             }