replaced str() objects with unicode() objects
Created by: rigid
replaced str() with unicode() to respect QtGui.QApplication.UnicodeUTF8 and to prevent:
File "/usr/lib64/freecad-9999/Mod/Ship/Instance.py", line 48, in __init__
QtGui.QApplication.UnicodeUTF8))
<type 'exceptions.UnicodeEncodeError'>: 'ascii' codec can't encode character u'\xfc' in position 20: ordinal not in range(128)