20120917

• New method lino.core.actors.Actor.param_defaults().

• Fixed bug in testing that caused a server traceback when trying to open lino_welfare.modlib.jobs.models.JobsOverview:

  AttributeError 'module' object has no attribute 'only_coached_persons'
  ...
  File "/var/snapshots/lino-welfare-dev/lino_welfare/modlib/jobs/models.py", line 1260, in body
      qs = pcsw.only_coached_persons(qs,today,