Add support for the showTitle property to all faces

faces/facepackages/barchart/contents/ui/FullRepresentation.qml

@@ -51,7 +51,7 @@ Faces.SensorFace {
             horizontalAlignment: Text.AlignHCenter
             elide: Text.ElideRight
             text: root.controller.title
-            visible: text.length > 0
+            visible: root.controller.showTitle && text.length > 0
             level: 2
             TextMetrics {
                 id: titleMetrics

faces/facepackages/horizontalbars/contents/ui/FullRepresentation.qml

@@ -46,7 +46,7 @@ Faces.SensorFace {
             horizontalAlignment: Text.AlignHCenter
             elide: Text.ElideRight
             text: root.controller.title
-            visible: text.length > 0
+            visible: root.controller.showTitle && text.length > 0
             level: 2
             TextMetrics {
                 id: titleMetrics

faces/facepackages/linechart/contents/ui/FullRepresentation.qml

@@ -48,7 +48,7 @@ Faces.SensorFace {
             horizontalAlignment: Text.AlignHCenter
             elide: Text.ElideRight
             text: root.controller.title
-            visible: text.length > 0
+            visible: root.controller.showTitle && text.length > 0
             level: 2
             TextMetrics {
                 id: titleMetrics

faces/facepackages/piechart/contents/ui/FullRepresentation.qml

@@ -46,7 +46,7 @@ Faces.SensorFace {
             horizontalAlignment: Text.AlignHCenter
             elide: Text.ElideRight
             text: root.controller.title
-            visible: text.length > 0
+            visible: root.controller.showTitle && text.length > 0
             level: 2
             TextMetrics {
                 id: titleMetrics

faces/facepackages/textonly/contents/ui/FullRepresentation.qml

@@ -45,7 +45,7 @@ Faces.SensorFace {
             horizontalAlignment: Text.AlignHCenter
             elide: Text.ElideRight
             text: root.controller.title
-            visible: text.length > 0
+            visible: root.controller.showTitle && text.length > 0
             level: 2
             TextMetrics {
                 id: titleMetrics