Remove the react-rails gem (#2801)

* Remove react-rails gem

* Fix broken view spec

spec/requests/account_show_page_spec.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe 'The account show page' do
+  it 'Has an h-feed with correct number of h-entry objects in it' do
+    alice = Fabricate(:account, username: 'alice', display_name: 'Alice')
+    _status = Fabricate(:status, account: alice, text: 'Hello World')
+    _status2 = Fabricate(:status, account: alice, text: 'Hello World Again')
+    _status3 = Fabricate(:status, account: alice, text: 'Are You Still There World?')
+
+    get '/@alice'
+
+    expect(h_feed_entries.size).to eq(3)
+  end
+
+  it 'has valid opengraph tags' do
+    alice = Fabricate(:account, username: 'alice', display_name: 'Alice')
+    _status = Fabricate(:status, account: alice, text: 'Hello World')
+
+    get '/@alice'
+
+    expect(head_meta_content('og:title')).to match alice.display_name
+    expect(head_meta_content('og:type')).to eq 'profile'
+    expect(head_meta_content('og:image')).to match '.+'
+    expect(head_meta_content('og:url')).to match 'http://.+'
+  end
+
+  def head_meta_content(property)
+    head_section.meta("[@property='#{property}']")[:content]
+  end
+
+  def head_section
+    Nokogiri::Slop(response.body).html.head
+  end
+
+  def h_feed_entries
+    Nokogiri::HTML(response.body).search('.h-feed .h-entry')
+  end
+end