FIX: use paging during options generation in edit mode

Summary

Implementation for https://gitlab.com/linkahead/linkahead-webui/-/issues/216

Focus

• Queries that retrieve entities that are candiates for drop down use paging.
• A Count Query identifies whether more enties would be available. If so, an option to enter an ID manually is included (a button ) and the dropdown shows a warning that it does not include all entities.

Test Environment

• manually test the behavior

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src/core/js/edit_mode.js

@@ -2138,11 +2138,12 @@ var edit_mode = new function () {
         if (use_cache && query_cache[str]) {
             return query_cache[str];
         }
+        var result;
         if (str.toUpperCase().startsWith('COUNT')) {
             const res = await connection.get(`Entity/?query=${str}`);
-            const result = $(res).find('Query').attr('results')
+            result = $(res).find('Query').attr('results')
         } else {
-            const result = query(str);
+            result = query(str);
         }
         if (use_cache) {
             query_cache[str] = result;