Fix z order for MouseArea

Replace Pane with a rectangle, as it blocks MouseEvents
Fixes: #136

Author: TheOneRing

src/gui/qml/FolderDelegate.qml

@@ -216,6 +216,20 @@ Pane {
                             contextMenu.popup();
                         }
 
+                        MouseArea {
+                            acceptedButtons: Qt.LeftButton | Qt.RightButton
+                            anchors.fill: parent
+
+                            onClicked: mouse => {
+                                if (mouse.button === Qt.RightButton) {
+                                    contextMenu.popup();
+                                } else {
+                                    folderDelegate.ListView.view.currentIndex = folderDelegate.index;
+                                    folderDelegate.forceActiveFocus(Qt.TabFocusReason);
+                                }
+                            }
+                        }
+
                         SpaceDelegate {
                             anchors.fill: parent
                             Layout.fillHeight: true
@@ -308,20 +322,6 @@ Pane {
                                 }
                             }
                         }
-
-                        MouseArea {
-                            acceptedButtons: Qt.LeftButton | Qt.RightButton
-                            anchors.fill: parent
-
-                            onClicked: mouse => {
-                                if (mouse.button === Qt.RightButton) {
-                                    contextMenu.popup();
-                                } else {
-                                    folderDelegate.ListView.view.currentIndex = folderDelegate.index;
-                                    folderDelegate.forceActiveFocus(Qt.TabFocusReason);
-                                }
-                            }
-                        }
                     }
 
                     Image {

src/gui/spaces/qml/SpaceDelegate.qml

@@ -37,12 +37,14 @@ Item {
             Layout.fillWidth: true
             spacing: spaceDelegate.spacing
 
-            Pane {
+            Rectangle {
                 Accessible.ignored: true
                 Layout.preferredHeight: normalSize - 20
                 Layout.preferredWidth: normalSize - 20
                 Layout.alignment: Qt.AlignTop
 
+                color: spaceDelegate.palette.alternateBase
+
                 Image {
                     id: image
                     anchors.fill: parent