try to fix profile scaling

Different approach here:

- profile gets a bit higher, this was requested on the mailinglist, and
  seems to behave much better with the painted profile, we'd otherwise
  get it magically clipped on the right hand side.
- Make the scaling dpi aware, this fixes scaling for me on the Nexus7, I
  haven't been able to test it properly on other devices, so this needs
  some more testing. The result is visually quite close to what we can
  do, although I'm still getting a somewhat larger margin on the right.
  To get at the devicePixelRatio without too much custom code, I've
  added a property to the QMLProfile to retrieve it from the theme engine.

Signed-off-by: Sebastian Kügler <sebas@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-mobile/qml/DiveDetailsView.qml

@@ -28,7 +28,6 @@ Item {
 	GridLayout {
 		id: mainLayout
 		anchors {
-		    //fill: parent
 		    top: parent.top
 		    left: parent.left
 		    right: parent.right
@@ -118,9 +117,11 @@ Item {
 		QMLProfile {
 			id: qmlProfile
 			Layout.fillWidth: true
-			Layout.minimumHeight: Layout.preferredHeight
-			Layout.preferredHeight: width * 0.66
+			Layout.preferredHeight: Layout.minimumHeight
+			Layout.minimumHeight: width * 0.75
 			Layout.columnSpan: 4
+			clip: false
+			devicePixelRatio: MobileComponents.Units.devicePixelRatio
 			Rectangle {
 				color: "transparent"
 				opacity: 0.6