v1.1.57: fix scenario editor body bug + relativeTime columns + infra UUIDs

- scenario-form.js: fix ReferenceError body is not defined in renderEditor()
- utils.js: relativeTime(iso) → 3ч 12м / 2д 5ч / только что
- instances.js: columns created / modified with relativeTime()
- index.html: instanceUid under displayName in infra column

site/templates/index.html

@@ -86,7 +86,7 @@
             <div class="card-body" style="padding:0;max-height:150px;overflow-y:auto;">
                 <table>
                     {% for i in items %}
-                    <tr><td style="font-size:11px;padding:2px 8px;">{{ i.displayName }}</td><td><span class="badge badge-success" style="font-size:9px;">{{ i.explainedStatus or '?' }}</span></td></tr>
+                    <tr><td style="font-size:11px;padding:2px 8px;">{{ i.displayName }}<br><span style="color:var(--muted);font-size:9px;">{{ i.instanceUid }}</span></td><td><span class="badge badge-success" style="font-size:9px;">{{ i.explainedStatus or '?' }}</span></td></tr>
                     {% endfor %}
                 </table>
             </div>