[FIX] website_crm: 2 fixes commit, yeah

- admin is not follower anymore of all leads created through the
contact form. The famous no_subscribe key is added in the context
for that purpose.
- fixed medium and sales_team of the contact form leads. A bad
xml_id + bad use of get_object_reference + bad use of try/catch
prevented from having any of those. It now works correctly
even if the medium and/or sales team has been deleted.

Courtesy of Use Merge: Yannick Tivisse.
Reviewed by Use Merge: Thibault Delavallée.

I think this commit message is waaaay longer than the commit
itself, although I think I will never beat Olivier or
Martin. Those two are able to write 3 pages of commit messages
when doing a one-line fix. Well, this fix can be tricky
to understand but, hey, I am not writing stupid things just to
gain some characters. Not my style.

Have a good day.

addons/website_crm/controllers/main.py

@@ -28,7 +28,8 @@ class contactus(http.Controller):
 
     def create_lead(self, request, values, kwargs):
         """ Allow to be overrided """
-        return request.registry['crm.lead'].create(request.cr, SUPERUSER_ID, values, request.context)
+        cr, context = request.cr, request.context
+        return request.registry['crm.lead'].create(cr, SUPERUSER_ID, values, context=dict(context, mail_create_nosubscribe=True))
 
     def preRenderThanks(self, values, kwargs):
         """ Allow to be overrided """
@@ -76,11 +77,8 @@ class contactus(http.Controller):
             values = dict(values, error=error, kwargs=kwargs.items())
             return request.website.render(kwargs.get("view_from", "website.contactus"), values)
 
-        try:
-            values['medium_id'] = request.registry['ir.model.data'].get_object_reference(request.cr, SUPERUSER_ID, 'crm', 'crm_tracking_medium_website')[1]
-            values['section_id'] = request.registry['ir.model.data'].xmlid_to_res_id(request.cr, SUPERUSER_ID, 'website.salesteam_website_sales')
-        except ValueError:
-            pass
+        values['medium_id']  = request.registry['ir.model.data'].xmlid_to_res_id(request.cr, SUPERUSER_ID, 'crm.crm_medium_website')
+        values['section_id'] = request.registry['ir.model.data'].xmlid_to_res_id(request.cr, SUPERUSER_ID, 'website.salesteam_website_sales')
 
         # description is required, so it is always already initialized
         if post_description: