feat: I18n (#1653)

* feat: i18n

* Changing language single source of truth from TEAM to USER

* Changes according to @tommoor comments on PR

* Changed package.json for build:i18n and translation label

* Finished 1st MVP of i18n for outline

* new translation labels & Portuguese from Portugal translation

* Fixes from PR request

* Described language dropdown as an experimental feature

* Set keySeparator to false in order to cowork with html keys

* Added useTranslation to Breadcrumb

* Repositioned <strong> element

* Removed extra space from TemplatesMenu

* Fortified the test suite for i18n

* Fixed trans component problematic

* Check if selected language is available

* Update yarn.lock

* Removed unused Trans

* Removing debug variable from i18n init

* Removed debug variable

* test: update snapshots

* flow: Remove decorator usage to get proper flow typing
It's a shame, but hopefully we'll move to Typescript in the next 6 months and we can forget this whole Flow mistake ever happened

* translate: Drafts

* More translatable strings

* Mo translation strings

* translation: Search

* async translations loading

* cache translations in client

* Revert "cache translations in client"

This reverts commit 08fb61ce36384ff90a704faffe4761eccfb76da1.

* Revert localStorage cache for cache headers

* Update Crowdin configuration file

* Moved translation files to locales folder and fixed english text

* Added CONTRIBUTING File for CrowdIn

* chore: Move translations again to please CrowdIn

* fix: loading paths
chore: Add strings for editor

* fix: Improve validation on documents.import endpoint

* test: mock bull

* fix: Unknown mimetype should fallback to Markdown parsing if markdown extension (#1678)

* closes #1675

* Update CONTRIBUTING

* chore: Add link to translation portal from app UI

* refactor: Centralize language config

* fix: Ensure creation of i18n directory in build

* feat: Add language prompt

* chore: Improve contributing guidelines, add link from README

* chore: Normalize tab header casing

* chore: More string externalization

* fix: Language prompt in dark mode

Co-authored-by: André Glatzl <andreglatzl@gmail.com>

app/menus/ShareMenu.js

@@ -2,6 +2,7 @@
 import { observable } from "mobx";
 import { inject, observer } from "mobx-react";
 import * as React from "react";
+import { withTranslation, type TFunction } from "react-i18next";
 import { Redirect } from "react-router-dom";
 
 import SharesStore from "stores/SharesStore";
@@ -16,6 +17,7 @@ type Props = {
   shares: SharesStore,
   ui: UiStore,
   share: Share,
+  t: TFunction,
 };
 
 @observer
@@ -36,36 +38,38 @@ class ShareMenu extends React.Component<Props> {
 
     try {
       await this.props.shares.revoke(this.props.share);
-      this.props.ui.showToast("Share link revoked");
+      const { t } = this.props;
+      this.props.ui.showToast(t("Share link revoked"));
     } catch (err) {
       this.props.ui.showToast(err.message);
     }
   };
 
   handleCopy = () => {
-    this.props.ui.showToast("Share link copied");
+    const { t } = this.props;
+    this.props.ui.showToast(t("Share link copied"));
   };
 
   render() {
     if (this.redirectTo) return <Redirect to={this.redirectTo} push />;
 
-    const { share, onOpen, onClose } = this.props;
+    const { share, onOpen, onClose, t } = this.props;
 
     return (
       <DropdownMenu onOpen={onOpen} onClose={onClose}>
         <CopyToClipboard text={share.url} onCopy={this.handleCopy}>
-          <DropdownMenuItem>Copy link</DropdownMenuItem>
+          <DropdownMenuItem>{t("Copy link")}</DropdownMenuItem>
         </CopyToClipboard>
         <DropdownMenuItem onClick={this.handleGoToDocument}>
-          Go to document
+          {t("Go to document")}
         </DropdownMenuItem>
         <hr />
         <DropdownMenuItem onClick={this.handleRevoke}>
-          Revoke link
+          {t("Revoke link")}
         </DropdownMenuItem>
       </DropdownMenu>
     );
   }
 }
 
-export default inject("shares", "ui")(ShareMenu);
+export default withTranslation()<ShareMenu>(inject("shares", "ui")(ShareMenu));