Dynamicaly import locales (#1793)

* dynamicly import locales

* fix tests

* reformat languages

src/components/InitializeApp.tsx

@@ -0,0 +1,24 @@
+import React from "react";
+
+import { LoadingMessage } from "./LoadingMessage";
+import { setLanguageFirstTime } from "../i18n";
+
+export class InitializeApp extends React.Component<
+  any,
+  { isLoading: boolean }
+> {
+  public state: { isLoading: boolean } = {
+    isLoading: true,
+  };
+
+  async componentDidMount() {
+    await setLanguageFirstTime();
+    this.setState({
+      isLoading: false,
+    });
+  }
+
+  public render() {
+    return this.state.isLoading ? <LoadingMessage /> : this.props.children;
+  }
+}