Fix 2 bugs (scodoc_dept)

app/email.py

@@ -70,7 +70,7 @@ def send_message(msg: Message):
     if current_app.config.get("DISABLE_EMAILS"):
         log("send_message: emails disabled by config")
         return
-    if getattr(g, "scodoc_dept"):
+    if getattr(g, "scodoc_dept", None):
         # on est dans un département, on peut accéder aux préférences
         email_test_mode_address = sco_preferences.get_preference(
             "email_test_mode_address"

app/scodoc/sco_cache.py

@@ -282,7 +282,7 @@ def invalidate_formsemestre(  # was inval_cache(formsemestre_id=None, pdfonly=Fa
     if getattr(g, "defer_cache_invalidation", 0) > 0:
         g.sem_to_invalidate.add(formsemestre_id)
         return
-    if getattr(g, "scodoc_dept") is None:
+    if getattr(g, "scodoc_dept", None) is None:
         # appel via API ou tests sans dept:
         formsemestre = None
         if formsemestre_id: