[Paraview] Manage plugins

[clinton at elemtech.com]

> Works great. Just one small remark: when I start paraview its working
> directory is the directory itwas started in. When I use PV_PLUGIN_PATH
> its working directory seems to be the directory specified with
> PV_PLUGIN_PATH (at least that's the directory the FileOpen-dialog
> starts in). It's not a bug, but a bit annoying, because I have to
> klick my way back to the directory with the data)

Thanks for reporting that.
It has just been fixed.

Clint