Cleaned up WP7 App.xaml template

App.xaml

<Application 
    x:Class="$namespace$.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:system="clr-namespace:System;assembly=mscorlib"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone">

    <Application.Resources>
        <system:String x:Key="ApplicationTitle">APPLICATION TITLE</system:String>
        
        <!-- Page margins -->
        <Thickness x:Key="PageHeaderPanelMargin">12,17,0,28</Thickness>
        <Thickness x:Key="PageNameLabelMargin">9,-7,0,0</Thickness>
        <Thickness x:Key="PageContentPanelMargin">12,0</Thickness>
        
        <Style x:Key="DefaultPageStyle" TargetType="phone:PhoneApplicationPage">
            <Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilyNormal}"/>
            <Setter Property="FontSize" Value="{StaticResource PhoneFontSizeNormal}"/>
            <Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
            <Setter Property="SupportedOrientations" Value="Portrait"/>
            <Setter Property="Orientation" Value="PortraitUp"/>
            <Setter Property="shell:SystemTray.IsVisible" Value="True"/>
        </Style>
    </Application.Resources>
    
    <Application.ApplicationLifetimeObjects>
        <shell:PhoneApplicationService />
    </Application.ApplicationLifetimeObjects>
</Application>

App.xaml.cs

using System.Diagnostics;
using System.Windows;
using System.Windows.Navigation;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;

namespace TrackYourKids.Phone
{
    public partial class App
    {
        public static new App Current
        {
            get { return (App) Application.Current; }
        }

        public PhoneApplicationFrame RootFrame { get; private set; }

        public App()
        {
            UnhandledException += OnUnhandledException;

            InitializeComponent();
            InitializePhoneApplication();
            InitializeDebugEnvironment();
        }

        [Conditional("DEBUG")]
        private void InitializeDebugEnvironment()
        {
            if (Debugger.IsAttached)
            {
                Application.Current.Host.Settings.EnableFrameRateCounter = true;
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }
        }

        private void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (Debugger.IsAttached)
            {
                Debugger.Break();
            }
        }

        private void OnUnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            if (Debugger.IsAttached)
            {
                Debugger.Break();
            }
        }

        private void InitializePhoneApplication()
        {
            RootFrame = new PhoneApplicationFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;
            RootFrame.NavigationFailed += OnNavigationFailed;
        }

        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
            RootVisual = RootFrame;
        }
    }
}

Added PhoneApplicationService as Application.ApplicationLifetimeObjects to prevent null reference exception during debugging.