[applets/notes] Show Font Toolbar just in editing mode

Normally whole credit has to go @ngraham  :)


(cherry picked from commit 4353fcb1)

applets/notes/package/contents/ui/main.qml

@@ -413,7 +413,7 @@ PlasmaCore.SvgItem {
                 left: parent.left
                 right: parent.right
             }
-
+            height: visible ? implicitHeight : 0
             visible: opacity > 0
             opacity: focusScope.activeFocus ? 1 : 0
             Behavior on opacity { NumberAnimation { duration: PlasmaCore.Units.longDuration } }