[needs-docs][ui] harmonize title of panels

Author: nirvn

python/plugins/processing/ui/ProcessingToolbox.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Processing Toolbox</string>
+   <string>Processing Toolbox Panel</string>
   </property>
   <widget class="QWidget" name="dockWidgetContents">
    <layout class="QVBoxLayout" name="verticalLayout">

python/plugins/processing/ui/resultsdockbase.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Processing results viewer</string>
+   <string>Results Viewer Panel</string>
   </property>
   <widget class="QWidget" name="dockWidgetContents">
    <layout class="QVBoxLayout" name="verticalLayout">

src/app/qgisapp.cpp

@@ -899,7 +899,7 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, bool skipVersionCh
 
   startProfile( QStringLiteral( "Layer Style dock" ) );
   mMapStylingDock = new QgsDockWidget( this );
-  mMapStylingDock->setWindowTitle( tr( "Layer Styling" ) );
+  mMapStylingDock->setWindowTitle( tr( "Layer Styling Panel" ) );
   mMapStylingDock->setObjectName( QStringLiteral( "LayerStyling" ) );
   mMapStyleWidget = new QgsLayerStylingWidget( mMapCanvas, mMapLayerPanelFactories );
   mMapStylingDock->setWidget( mMapStyleWidget );

src/app/qgsidentifyresultsdialog.cpp

@@ -326,7 +326,7 @@ QgsIdentifyResultsDialog::QgsIdentifyResultsDialog( QgsMapCanvas *canvas, QWidge
   mOpenFormAction->setDisabled( true );
 
   QgsSettings mySettings;
-  mDock = new QgsDockWidget( tr( "Identify Results" ), QgisApp::instance() );
+  mDock = new QgsDockWidget( tr( "Identify Results Panel" ), QgisApp::instance() );
   mDock->setObjectName( QStringLiteral( "IdentifyResultsDock" ) );
   mDock->setAllowedAreas( Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea );
   mDock->setWidget( this );

src/ui/qgsidentifyresultsbase.ui

@@ -11,7 +11,7 @@
    </rect>
   </property>
   <property name="windowTitle">
-   <string>Identify Results</string>
+   <string>Identify Results Panel</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_4">
    <property name="spacing">