better detection of the last step: ignore CC decision

Case: http://www.senat.fr/dossier-legislatif/pjl17-296.html
   - definitive text missing
   - CC decision is made
   - legifrance text not there yet

We should wait for the legifrance text to be published before erroring

But the CC decision won't be shown yet, best could be to display
all the steps and just have an "error" box for texts we cannot parse

tlfp/parse_doslegs_texts.py

@@ -190,7 +190,7 @@ def parse_texts(dos):
                 continue
 
             step_in_discussion = not dos.get('url_jo') and \
-                not any([1 for step in steps[step_index+1:] if 'source_url' in step and step.get('step') != 'depot'])
+                not any([1 for step in steps[step_index+1:] if 'source_url' in step and step.get('step') in ('hemicycle', 'commission')])
             if step_in_discussion:
                 print('     * ignore step in discussion')
                 break