Fix: proper sorting resources by age column (#2182)

* - fix: proper sorting for resource age column
- use Date.now() instead of new Date().getTime() (#2141 follow-up)

Signed-off-by: Roman <ixrock@gmail.com>

* fix: proper bar-chart tooltip callback

Signed-off-by: Roman <ixrock@gmail.com>

* fix: sorting in cronjobs, more Date.now() replacements

Signed-off-by: Roman <ixrock@gmail.com>

src/renderer/components/+workloads-pods/pods.tsx

@@ -83,7 +83,7 @@ export class Pods extends React.Component<Props> {
           [columnId.owners]: (pod: Pod) => pod.getOwnerRefs().map(ref => ref.kind),
           [columnId.qos]: (pod: Pod) => pod.getQosClass(),
           [columnId.node]: (pod: Pod) => pod.getNodeName(),
-          [columnId.age]: (pod: Pod) => pod.metadata.creationTimestamp,
+          [columnId.age]: (pod: Pod) => pod.getTimeDiffFromNow(),
           [columnId.status]: (pod: Pod) => pod.getStatusMessage(),
         }}
         searchFilters={[