Mobile: don't make sub-pages fill the parent

This had very strange results with the current Kirigami.
Instead set the width of those pages based on our overall column width.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

mobile-widgets/qml/DiveDetails.qml

@@ -59,6 +59,7 @@ Kirigami.Page {
 	rightPadding: 0
 	bottomPadding: 0
 	background: Rectangle { color: subsurfaceTheme.backgroundColor }
+	width: rootItem.colWidth
 
 	states: [
 		State {

mobile-widgets/qml/MapPage.qml

@@ -13,7 +13,7 @@ Kirigami.Page {
 	rightPadding: 0
 	bottomPadding: 0
 	property bool firstRun: true
-
+	width: rootItem.colWidth
 	MapWidget {
 		id: mapWidget
 		anchors.fill: parent

mobile-widgets/qml/main.qml

@@ -127,6 +127,7 @@ Kirigami.ApplicationWindow {
 	}
 
 	globalDrawer: Kirigami.GlobalDrawer {
+		height: rootItem.height
 		topContent: Image {
 			source: "qrc:/qml/icons/dive.jpg"
 			Layout.fillWidth: true
@@ -661,7 +662,6 @@ if you have network connectivity and want to sync your data to cloud storage."),
 	DiveDetails {
 		id: detailsWindow
 		visible: false
-		anchors.fill: parent
 	}
 
 	Log {
@@ -682,7 +682,6 @@ if you have network connectivity and want to sync your data to cloud storage."),
 	MapPage {
 		id: mapPage
 		visible: false
-		anchors.fill: parent
 	}
 
 	ThemeTest {