make sure horiz scrollbar is off when not needed

size the page correctly to not have the horizontal
scrollbar when not needed, and make sure the flickable
is not interactive, as flicking is managed by hand
with a mousearea

mobile/components/DocumentView.qml

@@ -33,15 +33,17 @@ QtControls.ScrollView {
     property DocumentItem document
     property PageItem page: mouseArea.currPageDelegate.pageItem
     signal clicked
-
+    
-    onWidthChanged: resizeTimer.restart()
+    //NOTE: on some themes it tries to set the flickable to interactive
-    onHeightChanged: resizeTimer.restart()
+    //but we need it always non interactive as we need to manage
+    //dragging by ourselves
+    Component.onCompleted: flick.interactive = false
     Flickable {
         id: flick
-        anchors.fill: parent
+        interactive: false
+        onWidthChanged: resizeTimer.restart()
+        onHeightChanged: resizeTimer.restart()
         
-        clip: true
-
         Component.onCompleted: {
             flick.contentWidth = flick.width
             flick.contentHeight = flick.width / mouseArea.currPageDelegate.pageRatio
@@ -248,4 +250,4 @@ QtControls.ScrollView {
             }
         }
     }
-}
+}