Better align reviw items and review button

Now everything is aligned with the rest of the content.

discover/qml/ApplicationPage.qml

@@ -227,14 +227,13 @@ DiscoverPage {
             }
             delegate: ReviewDelegate {
                 Layout.topMargin: Kirigami.Units.largeSpacing
+                Layout.fillWidth: true
                 separator: false
                 compact: true
-                Layout.bottomMargin: Kirigami.Units.largeSpacing
             }
         }
 
         RowLayout {
-            Layout.alignment: Qt.AlignHCenter
             Layout.topMargin: Kirigami.Units.largeSpacing
             Layout.bottomMargin: Kirigami.Units.largeSpacing
             spacing: Kirigami.Units.largeSpacing

discover/qml/ReviewDelegate.qml

@@ -17,10 +17,6 @@ RowLayout {
     property bool separator: true
     signal markUseful(bool useful)
 
-    Item {
-        Layout.fillHeight: true
-        Layout.preferredWidth: Kirigami.Units.largeSpacing
-    }
     // Spacers to indent nested comments/replies
     Repeater {
         model: depth
@@ -183,8 +179,4 @@ RowLayout {
             }
         }
     }
-    Item {
-        Layout.fillHeight: true
-        Layout.preferredWidth: Kirigami.Units.largeSpacing * 2
-    }
 }