WebHost: some updates (#603)

* WebHost: Make custom server prefer ipv4 for display

* WebHost: Make server retry saving in case of connection issues

* WebHost: fix autolaunch guardians getting stuck waiting for the oldest two rooms.
Probably not related to the issues of the system itself getting stuck, but should be fixed anyway.

* WebHost: logfile is meant to be guarded by access cookie

* WebHost: set patch target to null if port is not valid, disabling auto-connect

WebHost.py

@@ -22,7 +22,7 @@ from WebHostLib.autolauncher import autohost, autogen
 from WebHostLib.lttpsprites import update_sprites_lttp
 from WebHostLib.options import create as create_options_files
 
-from worlds.AutoWorld import AutoWorldRegister, WebWorld
+from worlds.AutoWorld import AutoWorldRegister
 
 configpath = os.path.abspath("config.yaml")
 if not os.path.exists(configpath):  # fall back to config.yaml in home
@@ -75,7 +75,6 @@ def create_ordered_tutorials_file() -> typing.List[typing.Dict[str, typing.Any]]
             for guide in game_data['tutorials']:
                 if guide and tutorial.tutorial_name == guide['name']:
                     guide['files'].append(current_tutorial['files'][0])
-                    added = True
                     break
             else:
                 game_data['tutorials'].append(current_tutorial)
@@ -109,7 +108,6 @@ if __name__ == "__main__":
         autogen(app.config)
     if app.config["SELFHOST"]:  # using WSGI, you just want to run get_app()
         if app.config["DEBUG"]:
-            autohost(app.config)
             app.run(debug=True, port=app.config["PORT"])
         else:
             serve(app, port=app.config["PORT"], threads=app.config["WAITRESS_THREADS"])