Add back “Home” link to the “Getting Started” column when the “Home” column isn't mounted (#14707)

* Add back "Home" link to "Getting started" when Home column isn't mounted

* Fix keys in getting_started

It should not matter much in practice as the list of items will only
change extremely rarely, but having a `key` that corresponds to the actual
item makes much more sense than having it be the index of the item within
the list.

app/javascript/mastodon/features/getting_started/index.js

@@ -40,6 +40,7 @@ const messages = defineMessages({
 
 const mapStateToProps = state => ({
   myAccount: state.getIn(['accounts', me]),
+  columns: state.getIn(['settings', 'columns']),
   unreadFollowRequests: state.getIn(['user_lists', 'follow_requests', 'items'], ImmutableList()).size,
 });
 
@@ -89,60 +90,66 @@ class GettingStarted extends ImmutablePureComponent {
   }
 
   render () {
-    const { intl, myAccount, multiColumn, unreadFollowRequests } = this.props;
+    const { intl, myAccount, columns, multiColumn, unreadFollowRequests } = this.props;
 
     const navItems = [];
-    let i = 1;
     let height = (multiColumn) ? 0 : 60;
 
     if (multiColumn) {
       navItems.push(
-        <ColumnSubheading key={i++} text={intl.formatMessage(messages.discover)} />,
-        <ColumnLink key={i++} icon='users' text={intl.formatMessage(messages.community_timeline)} to='/timelines/public/local' />,
-        <ColumnLink key={i++} icon='globe' text={intl.formatMessage(messages.public_timeline)} to='/timelines/public' />,
+        <ColumnSubheading key='header-discover' text={intl.formatMessage(messages.discover)} />,
+        <ColumnLink key='community_timeline' icon='users' text={intl.formatMessage(messages.community_timeline)} to='/timelines/public/local' />,
+        <ColumnLink key='public_timeline' icon='globe' text={intl.formatMessage(messages.public_timeline)} to='/timelines/public' />,
       );
 
       height += 34 + 48*2;
 
       if (profile_directory) {
         navItems.push(
-          <ColumnLink key={i++} icon='address-book' text={intl.formatMessage(messages.profile_directory)} to='/directory' />,
+          <ColumnLink key='directory' icon='address-book' text={intl.formatMessage(messages.profile_directory)} to='/directory' />,
         );
 
         height += 48;
       }
 
       navItems.push(
-        <ColumnSubheading key={i++} text={intl.formatMessage(messages.personal)} />,
+        <ColumnSubheading key='header-personal' text={intl.formatMessage(messages.personal)} />,
       );
 
       height += 34;
     } else if (profile_directory) {
       navItems.push(
-        <ColumnLink key={i++} icon='address-book' text={intl.formatMessage(messages.profile_directory)} to='/directory' />,
+        <ColumnLink key='directory' icon='address-book' text={intl.formatMessage(messages.profile_directory)} to='/directory' />,
       );
 
       height += 48;
     }
 
+    if (multiColumn && !columns.find(item => item.get('id') === 'HOME')) {
+      navItems.push(
+        <ColumnLink key='home' icon='home' text={intl.formatMessage(messages.home_timeline)} to='/timelines/home' />,
+      );
+      height += 48;
+    }
+
     navItems.push(
-      <ColumnLink key={i++} icon='envelope' text={intl.formatMessage(messages.direct)} to='/timelines/direct' />,
-      <ColumnLink key={i++} icon='bookmark' text={intl.formatMessage(messages.bookmarks)} to='/bookmarks' />,
-      <ColumnLink key={i++} icon='star' text={intl.formatMessage(messages.favourites)} to='/favourites' />,
-      <ColumnLink key={i++} icon='list-ul' text={intl.formatMessage(messages.lists)} to='/lists' />,
+      <ColumnLink key='direct' icon='envelope' text={intl.formatMessage(messages.direct)} to='/timelines/direct' />,
+      <ColumnLink key='bookmark' icon='bookmark' text={intl.formatMessage(messages.bookmarks)} to='/bookmarks' />,
+      <ColumnLink key='favourites' icon='star' text={intl.formatMessage(messages.favourites)} to='/favourites' />,
+      <ColumnLink key='lists' icon='list-ul' text={intl.formatMessage(messages.lists)} to='/lists' />,
     );
 
     height += 48*4;
 
     if (myAccount.get('locked') || unreadFollowRequests > 0) {
-      navItems.push(<ColumnLink key={i++} icon='user-plus' text={intl.formatMessage(messages.follow_requests)} badge={badgeDisplay(unreadFollowRequests, 40)} to='/follow_requests' />);
+      navItems.push(<ColumnLink key='follow_requests' icon='user-plus' text={intl.formatMessage(messages.follow_requests)} badge={badgeDisplay(unreadFollowRequests, 40)} to='/follow_requests' />);
       height += 48;
     }
 
     if (!multiColumn) {
       navItems.push(
-        <ColumnSubheading key={i++} text={intl.formatMessage(messages.settings_subheading)} />,
-        <ColumnLink key={i++} icon='gears' text={intl.formatMessage(messages.preferences)} href='/settings/preferences' />,
+        <ColumnSubheading key='header-settings' text={intl.formatMessage(messages.settings_subheading)} />,
+        <ColumnLink key='preferences' icon='gears' text={intl.formatMessage(messages.preferences)} href='/settings/preferences' />,
       );
 
       height += 34 + 48;