Fix NepomukStorage::setContactSubscriptionState
Fix NepomukStorage::setContactSubscriptionState

Use the correct properties.

KDE/ktp-common-internals,KDE/ktp-common-internals,leonhandreke/ktp-common-internals,leonhandreke/ktp-common-internals,KDE/ktp-common-internals,leonhandreke/ktp-common-internals