Show prices for logged in users

Trip prices are visible on trip list, accommodation list,
conference list and travel list.

Prices are hidden if not logged in, except conference prices.

Still need to show prices on individual trip page.

web_view.py

@@ -2,6 +2,7 @@
 
 """Web page to show upcoming events."""
 
+import decimal
 import inspect
 import operator
 import os.path
@@ -125,6 +126,12 @@ def travel_list() -> str:
         if all("distance" in leg for leg in train["legs"]):
             train["distance"] = sum(leg["distance"] for leg in train["legs"])
 
+    for travel_type in flights, trains:
+        for item in travel_type:
+            price = item.get("price")
+            if price:
+                item["price"] = decimal.Decimal(price)
+
     return flask.render_template("travel.html", flights=flights, trains=trains)
 
 
@@ -180,6 +187,10 @@ def accommodation_list() -> str:
     """Page showing a list of past, present and future accommodation."""
     data_dir = app.config["PERSONAL_DATA"]
     items = travel.parse_yaml("accommodation", data_dir)
+    for item in items:
+        price = item.get("price")
+        if price:
+            item["price"] = decimal.Decimal(price)
 
     stays_in_2024 = [item for item in items if item["from"].year == 2024]
     total_nights_2024 = sum(