Add user notes on accounts (#14148)

* Add UserNote model

* Add UI for user notes

* Put comment in relationships entity

* Add API to create user notes

* Copy user notes to new account when receiving a Move activity

* Address some of the review remarks

* Replace modal by inline edition

* Please CodeClimate

* Button design changes

* Change design again

* Cancel note edition when pressing Escape

* Fixes

* Tweak design again

* Move “Add note” item, and allow users to add notes to themselves

* Rename UserNote into AccountNote, rename “comment” Relationship attribute to “note”

app/javascript/mastodon/features/account/components/header.js

@@ -11,6 +11,7 @@ import Avatar from 'mastodon/components/avatar';
 import { shortNumberFormat } from 'mastodon/utils/numbers';
 import { NavLink } from 'react-router-dom';
 import DropdownMenuContainer from 'mastodon/containers/dropdown_menu_container';
+import AccountNoteContainer from '../containers/account_note_container';
 
 const messages = defineMessages({
   unfollow: { id: 'account.unfollow', defaultMessage: 'Unfollow' },
@@ -45,6 +46,7 @@ const messages = defineMessages({
   unendorse: { id: 'account.unendorse', defaultMessage: 'Don\'t feature on profile' },
   add_or_remove_from_list: { id: 'account.add_or_remove_from_list', defaultMessage: 'Add or Remove from lists' },
   admin_account: { id: 'status.admin_account', defaultMessage: 'Open moderation interface for @{name}' },
+  add_account_note: { id: 'account.add_account_note', defaultMessage: 'Add note for @{name}' },
 });
 
 const dateFormatOptions = {
@@ -64,6 +66,7 @@ class Header extends ImmutablePureComponent {
     identity_props: ImmutablePropTypes.list,
     onFollow: PropTypes.func.isRequired,
     onBlock: PropTypes.func.isRequired,
+    onEditAccountNote: PropTypes.func.isRequired,
     intl: PropTypes.object.isRequired,
     domain: PropTypes.string.isRequired,
   };
@@ -128,6 +131,8 @@ class Header extends ImmutablePureComponent {
       return null;
     }
 
+    const accountNote = account.getIn(['relationship', 'note']);
+
     let info        = [];
     let actionBtn   = '';
     let lockedIcon  = '';
@@ -178,6 +183,10 @@ class Header extends ImmutablePureComponent {
       menu.push(null);
     }
 
+    if (accountNote === null) {
+      menu.push({ text: intl.formatMessage(messages.add_account_note, { name: account.get('username') }), action: this.props.onEditAccountNote });
+    }
+
     if (account.get('id') === me) {
       menu.push({ text: intl.formatMessage(messages.edit_profile), href: '/settings/profile' });
       menu.push({ text: intl.formatMessage(messages.preferences), href: '/settings/preferences' });
@@ -284,6 +293,8 @@ class Header extends ImmutablePureComponent {
             </h1>
           </div>
 
+          <AccountNoteContainer account={account} />
+
           <div className='account__header__extra'>
             <div className='account__header__bio'>
               { (fields.size > 0 || identity_proofs.size > 0) && (