WP7 XAML demo leftovers
Updated demo app icons
Latest translations and standard cultures

Included latest version of the translation files and standardized the
cultures according to the list provided by Microsoft at
http://msdn.microsoft.com/en-us/library/windowsphone/develop/hh202918(v=vs.105).aspx
(i.e. "fi-FI" instead of "fi" )
Protected setters for FeedbackHelper's properties

The properties are mean to be set only from inside the component,
therefore their setters are now marked "internal"
Merge pull request #12 from ltomuta/master

Latest translations, standardized cultures and other improvements