Add websockets and notify frontend when an item is processed

modules/webapp/src/main/elm/Ports.elm

@@ -11,6 +11,7 @@ port module Ports exposing
     , printElement
     , receiveCheckQueryResult
     , receiveUiSettings
+    , receiveWsMessage
     , removeAccount
     , requestUiSettings
     , setAccount
@@ -55,6 +56,15 @@ and calls the print dialog.
 port printElement : String -> Cmd msg
 
 
+{-| Receives messages from the websocket.
+-}
+port receiveWsMessage : (String -> msg) -> Sub msg
+
+
+
+--- Higher level functions based on ports
+
+
 setUiTheme : UiTheme -> Cmd msg
 setUiTheme theme =
     internalSetUiTheme (Data.UiTheme.toString theme)