Make the default port (9999) documented and used consistently

docs/bridge_setup.md

@@ -81,7 +81,7 @@ Execute the following command:
 node app.js -r -f appservice-registration-irc.yaml -u "http://where.the.appservice.listens:9999" -c config.yaml -l my_bot
 ```
 
-Change `-u "http://localhost:8090"` to whereever your Matrix server can contact this IRC bridge.
+Change `-u "http://localhost:9999"` to wherever your Matrix server can contact this IRC bridge.
 By changing the option `-l my_bot` you can modify the localpart of the bridge bot user. It contacts
 Matrix users of your bridge to control their usage of the bridge (e.g. to change their nickname).
 

src/bridge/IrcBridge.ts

@@ -46,7 +46,7 @@ import { RoomConfig } from "./RoomConfig";
 import { PrivacyProtection } from "../irc/PrivacyProtection";
 
 const log = getLogger("IrcBridge");
-const DEFAULT_PORT = 8090;
+const DEFAULT_PORT = 9999;
 const DELAY_TIME_MS = 10 * 1000;
 const DELAY_FETCH_ROOM_LIST_MS = 3 * 1000;
 const DEAD_TIME_MS = 5 * 60 * 1000;