Send payment confirmation mail after payment, and send weekly reminders for people that have not paid

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

tfjm/helloasso.py

@@ -46,7 +46,7 @@ def get_hello_asso_access_token():
         return _access_token
 
     if response.status_code == 400:
-        raise ValueError(str(response.json()['errors']))
+        raise ValueError(str(response.json()))
     response.raise_for_status()
 
     data = response.json()