Merge remote-tracking branch 'origin/update_vishnu_dashboard'

* origin/update_vishnu_dashboard:
  Added path for VTK and VisTrails
Fixed wrong var name used for vistrails root
Merge remote-tracking branch 'origin/fix_vishnu_vistrails_name' into next

* origin/fix_vishnu_vistrails_name:
  Fixed wrong var name used for vistrails root