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/components/Avatar/AvatarWithPresence.js

@@ -4,6 +4,7 @@ import { observable } from "mobx";
 import { observer } from "mobx-react";
 import { EditIcon } from "outline-icons";
 import * as React from "react";
+import { withTranslation, type TFunction } from "react-i18next";
 import styled from "styled-components";
 import User from "models/User";
 import UserProfile from "scenes/UserProfile";
@@ -16,6 +17,7 @@ type Props = {
   isEditing: boolean,
   isCurrentUser: boolean,
   lastViewedAt: string,
+  t: TFunction,
 };
 
 @observer
@@ -37,20 +39,25 @@ class AvatarWithPresence extends React.Component<Props> {
       isPresent,
       isEditing,
       isCurrentUser,
+      t,
     } = this.props;
 
+    const action = isPresent
+      ? isEditing
+        ? t("currently editing")
+        : t("currently viewing")
+      : t("viewed {{ timeAgo }} ago", {
+          timeAgo: distanceInWordsToNow(new Date(lastViewedAt)),
+        });
+
     return (
       <>
         <Tooltip
           tooltip={
             <Centered>
-              <strong>{user.name}</strong> {isCurrentUser && "(You)"}
+              <strong>{user.name}</strong> {isCurrentUser && `(${t("You")})`}
               <br />
-              {isPresent
-                ? isEditing
-                  ? "currently editing"
-                  : "currently viewing"
-                : `viewed ${distanceInWordsToNow(new Date(lastViewedAt))} ago`}
+              {action}
             </Centered>
           }
           placement="bottom"
@@ -83,4 +90,4 @@ const AvatarWrapper = styled.div`
   transition: opacity 250ms ease-in-out;
 `;
 
-export default AvatarWithPresence;
+export default withTranslation()<AvatarWithPresence>(AvatarWithPresence);