BUG 11407 "No muestra el dashlet PM Table cuando se asigna..." SOLVED

- In ADMIN>Settings>Dashboards assignment does not respect
  the "Assign To" for groups and departments
- Solved problem, small improvement in validation
* Available from version ProcessMaker-2.5
Merge pull request #1672 from victorsl/BUG-11407

BUG 11407 "No muestra el dashlet PM Table cuando se asigna..." SOLVED