Library: fixed the bug that was preventing exporting more than 50 rec…#2083

SKuipers merged 1 commit intoGibbonEdu:v31.0.00GibbonEdu/core:v31.0.00from

ali-ichk:Library--bug-fix-while-exporting-records-in-Catalog-Summaryali-ichk/core:Library--bug-fix-while-exporting-records-in-Catalog-SummaryCopy head branch name to clipboard