Dvogonen/rename companion 485

As far as I can see the rename is complete. I fixed the language selection problem Kilrah reported. 
Here are the things we have decided to leave aside:
The configuration is still in the companion9x.conf file (is this the same on Windows?). Should optimally be converted at startup. New issue.
The QT resources are compiled via and referenced through  companion9x.qrc. This has to wait until Bertrand is finished with his dialog changes. New issue.