Revision 2759

Fixing the problem that with localisation the selection of
a class generator might not work.

*  Thuban/UI/classgen.py(ClassGenDialog): translating result from
genChoice.GetString() back to internal encoding.

*  Thuban/UI/__init__.py: Added internal_from_wxstring() and
ugly code that actually sets this function. Using and internal
variable _wx_can_be_imported that install_wx_translation() will set.