Provide a visual flowchart for running workunits

There are several points to make about doing this:

1. We need to provide more information to users so they can clearly see what is happening to their job.

2. A flowchart or something similar would give a quick and easy view of where in the process their workunit is.

3. User's wouldn't need to ask for clarification about why their workunit isn't progressing as fast as they would like if they can see it is, for example, waiting to spray a file etc and it would help them to better understand the process a workunit goes through between the submit and completed states.