Description of problem:
Let's take leaving the cluster as an example.
If I click the nodes and press "Leave Cluster", all I get immediately is blue bar on top saying it's stopping nodes.

Then after a while some popups appear telling me if it succeeded or not. And if I dismiss them, I still have to reload the page to see the actual status.

It would be better if the actions were reflected in the UI from the start. That means that if any action is pending, it's visible somewhere.

Expected behaviour would be:
1. I click on the "Leave Cluster" button.
2. Then I'm informed that 3 actions (in 3-node cluster) are pending. Ideally, these would be reflected directly on the row corresponding to each node.
3. After the action is done, the respective row is updated (and possibly a popup appears, but updating some new status box on a page would be preferred).
4. I should also be informed should any action time out.

By implementing this approach I cloud clearly see the current status all the time from the beginning. Currently the pop-ups are more like a surprise :).

This approach could be used also for other operations/dialogs that can be reflected in the UI in a similar way.

Version-Release number of selected component (if applicable):
luci-0.26.0-31.el6.x86_64