Improve the UX of the queued jobs admin area

[sunnysideup]

Even as a developer I find it really hard to understand the UX in the CMS.

Have a look here:

I have no idea what most of these fields mean.

What I would suggest:

1. show only the key details

2. create an advanced tab with all the details

3. provide better messages about why a job has not run.

4. Provide a sentence about what it does... E.g. This job will run in 6 minutes. It will [e.g. clear your cache so that you ....].

5. have a system to work out if the cron job to run them is running - e.g. every time it is pinged, set a value in a cache so that you can work out how often the jobs are being "polled".

[robbieaverill]

I think the whole jobs interface needs a bit of love, so I'm going to reframe this issue for that purpose. cc @silverstripeux.

[mfendeksilverstripe]

Fixed in #314