Store the work_queue log in the working directory.
Reorganize plotting script a bit.
Only update the output directory.

Also, don't infer anything about the directory structure.
Fix parrot cache on the worker (again).
Keep track of time information of jobs.
Read headers from the work_queue log.
Switch info plots to sqlite and numpy.

Remove now obsolete parsing library (partially already integrated into cmssw.data.job).