[GitHub] mesos issue #233: Display task health in the Web UI.

[janisz]

Github user janisz commented on the issue:

    https://github.com/apache/mesos/pull/233
  
    @bmahler I added some colours. 
    
    
![health](https://user-images.githubusercontent.com/1616386/30872583-dae2d992-a2ea-11e7-8693-17efcd8610fa.gif)


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