fixed improvement of TablePreview.vue handling of weird input

src/components/subcomponents/view/TablePreview.vue

@@ -27,7 +27,8 @@ function sanitizeItemValue(v) {
   if (v === null || v === undefined) s = 'NA'
   else if (Array.isArray(v)) s = v.join(', ')
   else if (typeof v === 'object') s = JSON.stringify(v)
-  if (typeof s === 'string') return (s.length > 20 ? s.substring(0, 20) + '...' : s)
+  if (typeof s === 'string') return (s.length > 50 ? s.substring(0, 50) + '...' : s)
+  else return s
 }
 
 function loadItems({page, itemsPerPage}) {