Add table to doc util script

- Remove db parameter from several places
- Add constructors for document types

src/lib/ItemList.php

@@ -48,7 +48,7 @@ class ItemList {
     {
         $result = $query->execute();
         if (!$result) {
-            $this->error = Data::error($db)['error'];
+            $this->error = 'SQLite error: ' . $db->lastErrorMsg();
         } else {
             $this->items = $result;
         }