lastModification in request and answer


git-svn-id: svn://oss.dbc.dk/sync_php/php/OpenLibrary/OpenFindOrder/trunk@52573 30e9dc4a-7611-4fbc-83ba-eecf79b76bd0
lastRelevantModification to lastModification


git-svn-id: svn://oss.dbc.dk/sync_php/php/OpenLibrary/OpenFindOrder/trunk@52575 30e9dc4a-7611-4fbc-83ba-eecf79b76bd0