Translate the remaining shell text at display and keep translated values out of logic

shell/plugins/panels/elsewhen/CitySearch.qml

@@ -16,9 +16,9 @@ Column {
   // Zone id -> offset text; read inside a binding, so its dependencies track.
   property var offsetLabel: function(zoneId) { return "" }
   property bool loading: false
-  property string buttonText: "+  Add a city"
+  property string buttonText: "+  " + I18n.tr("Add a city")
   property string placeholderText: I18n.tr("Search cities…")
-  property string loadingText: "Loading zones\u2026"
+  property string loadingText: I18n.tr("Loading zones…")
   property real fontSize: Style.font.bodySmall
   property color foreground: Color.foreground
   property color dim: Qt.darker(foreground, 1.55)