Move past conferences to separate page

Closes: #157

templates/navbar.html

@@ -5,6 +5,7 @@
   {"endpoint": "trip_future_list", "label": "Future trip" },
   {"endpoint": "trip_past_list", "label": "Past trip" },
   {"endpoint": "conference_list", "label": "Conference" },
+  {"endpoint": "past_conference_list", "label": "Past conference" },
   {"endpoint": "travel_list", "label": "Travel" },
   {"endpoint": "accommodation_list", "label": "Accommodation" },
   {"endpoint": "gaps_page", "label": "Gap" },

web_view.py

@@ -24,7 +24,7 @@ import agenda.holidays
 import agenda.thespacedevs
 import agenda.trip
 from agenda import format_list_with_ampersand, travel, uk_tz
-from agenda.types import Trip
+from agenda.types import StrDict, Trip
 
 app = flask.Flask(__name__)
 app.debug = False
@@ -141,15 +141,13 @@ def as_date(d: date | datetime) -> date:
     return d.date() if isinstance(d, datetime) else d
 
 
-@app.route("/conference")
-def conference_list() -> str:
-    """Page showing a list of conferences."""
+def build_conference_list() -> list[StrDict]:
+    """Build conference list."""
     data_dir = app.config["PERSONAL_DATA"]
     filepath = os.path.join(data_dir, "conferences.yaml")
-    items = yaml.safe_load(open(filepath))
-    today = date.today()
-
+    items: list[StrDict] = yaml.safe_load(open(filepath))
     conference_trip_lookup = {}
+
     for trip in agenda.trip.build_trip_list():
         for trip_conf in trip.conferences:
             key = (trip_conf["start"], trip_conf["name"])
@@ -168,8 +166,15 @@ def conference_list() -> str:
             conf["linked_trip"] = this_trip
 
     items.sort(key=operator.itemgetter("start_date"))
+    return items
+
+
+@app.route("/conference")
+def conference_list() -> str:
+    """Page showing a list of conferences."""
+    today = date.today()
+    items = build_conference_list()
 
-    past = [conf for conf in items if conf["end_date"] < today]
     current = [
         conf
         for conf in items
@@ -180,7 +185,6 @@ def conference_list() -> str:
     return flask.render_template(
         "conference_list.html",
         current=current,
-        past=past,
         future=future,
         today=today,
         get_country=agenda.get_country,
@@ -188,6 +192,19 @@ def conference_list() -> str:
     )
 
 
+@app.route("/conference/past")
+def past_conference_list() -> str:
+    """Page showing a list of conferences."""
+    today = date.today()
+    return flask.render_template(
+        "conference_list.html",
+        past=[conf for conf in build_conference_list() if conf["end_date"] < today],
+        today=today,
+        get_country=agenda.get_country,
+        fx_rate=agenda.fx.get_rates(app.config),
+    )
+
+
 @app.route("/accommodation")
 def accommodation_list() -> str:
     """Page showing a list of past, present and future accommodation."""