Added appletGetFriendInvitationStorageChannelEvent, appletTryPopFromFriendInvitationStorageChannel, appletGetNotificationStorageChannelEvent, and appletTryPopFromNotificationStorageChannel. Added appletPushToFriendInvitationStorageChannel/appletPushToNotificationStorageChannel. Added friendsGetFriendInvitationNotificationEvent/friendsTryPopFriendInvitationNotificationInfo. Added notif, for adding notifGetNotificationSystemEvent/notifTryPopNotifiedApplicationParameter.