<bugfix>Fixed messages during upgrades so that upgrade info is not flagged as a warning</bugfix>
<bugfix>Fixed messages during upgrades so that upgrade info is not flagged as a warning</bugfix>

core/vistrail/controller.py:
  - VistrailController.handle_invalid_pipeline.process_package_exceptions:
    change error message to log-level instead of warning and fix
    wording and format of message
  - VistrailController.handle_invalid_pipeline: change left exceptions
    error message to put details in the details

minesense/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,hjanime/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,minesense/VisTrails,minesense/VisTrails,minesense/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,celiafish/VisTrails,celiafish/VisTrails,Nikea/VisTrails,celiafish/VisTrails,Nikea/VisTrails,minesense/VisTrails