Apply suggestions from code review

Co-authored-by: Jaime van Kessel <nallath@gmail.com>

plugins/PerObjectSettingsTool/PerObjectSettingsPanel.qml

@@ -187,7 +187,7 @@ Item
             // It kinda looks ugly otherwise (big panel, no content on it)
             id: currentSettings
             property int maximumHeight: 200 * screenScaleFactor
-            height: Math.min(contents.count * ((UM.Theme.getSize("section").height + UM.Theme.getSize("narrow_margin").height) + UM.Theme.getSize("default_lining").height), maximumHeight)
+            height: Math.min(contents.count * (UM.Theme.getSize("section").height + UM.Theme.getSize("narrow_margin").height + UM.Theme.getSize("default_lining").height), maximumHeight)
             visible: currentMeshType != "anti_overhang_mesh"
 
             ListView
@@ -245,7 +245,7 @@ Item
                     {
                         id: settingLoader
                         width: UM.Theme.getSize("setting").width
-                        height: UM.Theme.getSize("section").height +  UM.Theme.getSize("narrow_margin").height
+                        height: UM.Theme.getSize("section").height + UM.Theme.getSize("narrow_margin").height
                         enabled: provider.properties.enabled === "True"
                         property var definition: model
                         property var settingDefinitionsModel: addedSettingsModel

resources/qml/Settings/SettingItem.qml

@@ -18,7 +18,6 @@ Item
     anchors.right: parent.right
 
     // To avoid overlapping with the scrollBars
-    //anchors.rightMargin:  UM.Theme.getSize("thin_margin").width
 
     property alias contents: controlContainer.children
     property alias hovered: mouse.containsMouse

resources/qml/Settings/SettingView.qml

@@ -217,7 +217,7 @@ Item
         {
             id: delegate
 
-            width: contents.width - (scrollBar.width +UM.Theme.getSize("narrow_margin").width)
+            width: contents.width - (scrollBar.width + UM.Theme.getSize("narrow_margin").width)
             Behavior on height { NumberAnimation { duration: 100 } }
             opacity: enabled ? 1 : 0
             Behavior on opacity { NumberAnimation { duration: 100 } }