Disabled sites should be class hosting-warning, enabled but problematic sites should be hosting-error

The hosting site list was showing Disabled sites as being bright red as though they were errors, which was disorienting / ambiguous for some users.

I changed it to use hosting-warning class, which makes it orange-ish, as an alert, which was better.

However I didn't realise that a site that is *Enabled*, but has a task fail (i.e a verify, or a Disable task), changes to use the hosting-warning class too. This made it indistinguishable from disabled sites.

I'd like to change this so that:

a) Disabled sites are orange or amber
b) Enabled sites that have entered some sort of error state, are red

I think this is reasonable because Enabled sites that have a problem need addressing. Also, since the task output that might be an error is also red, this matches up with the 'colour' status of the site then.

See screenshot, where i have a site being provisioned (grey), enabled sites (green), disabled sites (orange), and an enabled site that has had a failed task (heh.. trying to disable a site that has had its platform files deleted!)

My reasoning here, is that a site in a Deleted state, isn't actually shown. So we ought never to see a 'red' site here, unless it is enabled and something is wrong.

See the screenshtot. Thoughts welcome