Handle NULL created column of api_tokens table

share/jupyterhub/static/js/token.js

@@ -12,7 +12,7 @@ require(["jquery", "jhapi", "moment"], function($, JHAPI, moment) {
     // convert ISO datestamps to nice momentjs ones
     el = $(el);
     let m = moment(new Date(el.text().trim()));
-    el.text(m.isValid() ? m.fromNow() : "Never");
+    el.text(m.isValid() ? m.fromNow() : el.text());
   });
 
   $("#request-token-form").submit(function() {

share/jupyterhub/templates/token.html

@@ -73,7 +73,11 @@
             {%- endif -%}
           </td>
           <td class="time-col col-sm-3">
+            {%- if token.created -%}
             {{ token.created.isoformat() + 'Z' }}
+            {%- else -%}
+            N/A
+            {%- endif -%}
           </td>
           <td class="col-sm-1 text-center">
             <button class="revoke-token-btn btn btn-xs btn-danger">revoke</button>
@@ -118,7 +122,11 @@
             {%- endif -%}
           </td>
           <td class="time-col col-sm-3">
+            {%- if client['created'] -%}
             {{ client['created'].isoformat() + 'Z' }}
+            {%- else -%}
+            N/A
+            {%- endif -%}
           </td>
           <td class="col-sm-1 text-center">
             <button class="revoke-token-btn btn btn-xs btn-danger">revoke</a>