Added Windows 10 GUID to compatibility.manifest.xml

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Drop "configure system sounds" button from settings dialog

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Do not use static CComboBox variable

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>