Recreate .sln file, solution folder; update pendule_ornamental font.
Add WPtoolkit NuGet package.
enhancements to Setting<T> class, ...

1. stop saving default value to IsolatedStorage, and
2. Add ctor to support JIT default value evaluation (used by
ForegroundColor, BackgroundColor to keep values in sync with
PhoneAccentColor, PhoneBackgroundColor).