Eliminate GUI error messages

Default noDebugPopups to True and get rid of console logger. ** Note:
you will either have to set noDebugPopups to True in
~/.uvcdat/startup.xml or delete your ~/.uvcdat directory to see the
effects. **
Adds previously required packages to default conf
Fixes typo: MissingRequirement should disable pkg

Fixes 447841f6, MissingRequirement should disable the package just like
InitializationFailed does.
Catch AttributeError in VTKAnimate
Merge remote-tracking branch 'origin/uvcdat-520-suppress-gui-errors' into uvcdat-next
Merge remote-tracking branch 'origin/uvcdat-520-fix-loaded-pkgs' into uvcdat-next
Merge branch 'uvcdat-dv3d-provenance' into uvcdat-next
Merge branch 'uvcdat-next' of vistrails.org:vistrails into uvcdat-next