US #990 more sort criteria


git-svn-id: svn://oss.dbc.dk/sync_php/php/OpenLibrary/OpenBibdk/trunk@62907 30e9dc4a-7611-4fbc-83ba-eecf79b76bd0
added sort[] for work_type, record_owner and article_date - US #990


git-svn-id: svn://oss.dbc.dk/sync_php/php/OpenLibrary/OpenBibdk/trunk@62926 30e9dc4a-7611-4fbc-83ba-eecf79b76bd0
US #990: param->sort can be repeated


git-svn-id: svn://oss.dbc.dk/sync_php/php/OpenLibrary/OpenBibdk/trunk@62930 30e9dc4a-7611-4fbc-83ba-eecf79b76bd0