tooltip: add tool tips to qt client

Change-Id: I7aeb96f4c8a09a8b8c0b8e6534079e3fa3965941
diff --git a/src/settingsview/components/AvSettingPage.qml b/src/settingsview/components/AvSettingPage.qml
index d6451e9..64a9f1c 100644
--- a/src/settingsview/components/AvSettingPage.qml
+++ b/src/settingsview/components/AvSettingPage.qml
@@ -281,6 +281,8 @@
                 source: "qrc:/images/icons/ic_arrow_back_24px.svg"
                 backgroundColor: "white"
                 onExitColor: "white"
+                toolTipText: qsTr("Toggle to display side panel")
+                hoverEnabled: true
 
                 visible: mainViewWindow.sidePanelHidden
 
@@ -381,9 +383,8 @@
                                 font.kerning: true
 
                                 model: audioInputDeviceModel
-
                                 textRole: "ID_UTF8"
-
+                                tooltipText: qsTr("Audio input device selector")
                                 onActivated: {
                                     slotAudioInputIndexChanged(index)
                                 }
@@ -436,9 +437,8 @@
                                 font.kerning: true
 
                                 model: audioOutputDeviceModel
-
                                 textRole: "ID_UTF8"
-
+                                tooltipText: qsTr("Choose the audio output device")
                                 onActivated: {
                                     slotAudioOutputIndexChanged(index)
                                 }
@@ -478,7 +478,7 @@
                                 model: audioOutputDeviceModel
 
                                 textRole: "ID_UTF8"
-
+                                tooltipText: qsTr("Choose the ringtone output device")
                                 onActivated: {
                                     slotRingtoneDeviceIndexChanged(index)
                                 }
@@ -580,7 +580,7 @@
                                 model: videoInputDeviceModel
 
                                 textRole: "DeviceName_UTF8"
-
+                                tooltipText: qsTr("Video device selector")
                                 onActivated: {
                                     slotDeviceBoxCurrentIndexChanged(index)
                                 }
@@ -620,6 +620,8 @@
                                 model: videoFormatResolutionModel
                                 textRole: "Resolution_UTF8"
 
+                                tooltipText: qsTr("Video device resolution selector")
+
                                 onActivated: {
                                     slotFormatCurrentIndexChanged(index,true)
                                 }
@@ -659,6 +661,8 @@
                                 model: videoFormatFpsModel
                                 textRole: "FPS_ToDisplay_UTF8"
 
+                                tooltipText: qsTr("Video device fps selector")
+
                                 onActivated: {
                                     slotFormatCurrentIndexChanged(index,false)
                                 }