Make menu update more resistant to HTTP errors and API changes

food.py

 l = time.localtime()
 this_week = datetime.datetime.now().isocalendar()[1]
 
-unordered += amica.get_restaurants(use_old, this_week)
-unordered += juvenes.get_restaurants(use_old, this_week)
-unordered += sodexo.get_restaurants(use_old, this_week)
-unordered += campusravita.get_restaurants(use_old, this_week)
-
+updateException = None
+for restaurant_module in [sodexo, amica, juvenes, campusravita]:
+    try:
+        unordered += restaurant_module.get_restaurants(use_old, this_week)
+    except Exception as e:
+        updateException = e
 
 max_week = 0;
 for r in unordered:
 
 write_all_days(all_restaurants, "", all_title, "");
 write_table(all_restaurants, "", all_title, "");
+
+if updateException is not None:
+    print("Exception happened while fetching menus")
+    raise updateException