save setting, fix warning

ui/js/actions/settings.js

@@ -1,4 +1,5 @@
 import * as types from "constants/action_types";
+import * as settings from "constants/settings";
 import batchActions from "util/batchActions";
 import lbry from "lbry";
 import fs from "fs";
@@ -133,6 +134,7 @@ export function doDownloadLanguages() {
 
 export function doChangeLanguage(language) {
   return function(dispatch, getState) {
+    lbry.setClientSetting(settings.LANGUAGE, language);
     app.i18n.setLocale(language);
   };
 }

ui/js/page/settings/view.jsx

@@ -125,15 +125,12 @@ class SettingsPage extends React.PureComponent {
               <FormField
                 type="select"
                 name="language"
+                defaultValue={language}
                 onChange={this.onLanguageChange.bind(this)}
               >
                 <option value="en">{__("English")}</option>
                 {Object.keys(languages).map(dLang =>
-                  <option
-                    key={dLang}
-                    selected={dLang == language ? "selected" : null}
-                    value={dLang}
-                  >
+                  <option key={dLang} value={dLang}>
                     {languages[dLang]}
                   </option>
                 )}