Update EU PF extraction script; substance translations is optional

Convert-EUProcessingFactorsDB/Compile-EUProcessingFactorsDB_MCRA.py

 #!/usr/bin/python
 
-__version_info__ = ('1', '0', '2')
+__version_info__ = ('1', '0', '3')
 __version__ = '.'.join(__version_info__)
 
 #############################################################################
@@ -45,7 +45,7 @@ dataset.add(
     short_argument='-s',
     help='The (input) substance translation file - '
          + 'format: csv (Comma Seperated), file not required.',
-    default_name='SubstanceTranslations.csv',
+    default_name='',
     necessary=False,
     default_dir='Input',
     direction='Input')