little fixes

- make preview on windows work
- remove dependency on generator.sh

Author: butesa

generator.inx

@@ -5,7 +5,7 @@
   <_name>Generator</_name>
   <id>generator.aurium.colivre.coop.br</id>
 
-  <dependency type="executable" location="extensions">generator.sh</dependency>
+  <dependency type="executable" location="extensions">generator.py</dependency>
 
   <param name="tab" type="notebook">
     <page name="tabA" _gui-text="Configuration">

generator.py

@@ -142,7 +142,7 @@ def Prepare_data(data_old):
 
 def Open_file_viewer(filename):
     if platform.system() == 'Windows':
-        Call_no_output([filename])
+        os.startfile(filename)
     elif Is_executable('xdg-open'):
         Call_no_output(['xdg-open', filename])
     else: