Add beginning of automated accessibility testing.

It's a currently failing test because we have issues to fix

spec/features/home_page_spec.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe "Home page" do
+  include Devise::Test::IntegrationHelpers
+
+  it "is accessible", js: true do
+    pending "there are accessibility issues to fix on the home page in the new design"
+    sign_in create(:confirmed_user, tailwind_theme: true)
+    visit root_path
+    # page.save_screenshot("screenshot.png")
+    # save_and_open_screenshot
+    expect(page).to be_axe_clean
+  end
+end

spec/spec_helper.rb

@@ -14,9 +14,10 @@
 require "email_spec"
 require "rspec/active_model/mocks"
 require "pundit/rspec"
+require "axe-rspec"
+require "capybara/rails"
 
 Capybara.javascript_driver = :selenium_headless
-Capybara.server = :webrick
 
 VCR.configure do |c|
   c.cassette_library_dir = "spec/fixtures/vcr_cassettes"
@@ -25,7 +26,7 @@
   # which automatically downloads the webdriver for headless testing
   c.ignore_hosts "github.com"
   c.ignore_request do |request|
-    URI(request.uri).host =~ /s3.amazonaws.com/
+    URI(request.uri).host =~ /objects.githubusercontent.com/
     # false
     # URI(request.uri).port == 7777
   end
@@ -109,7 +110,7 @@
   end
 
   # For testing use a memory adapter with all features disabled by default
-  config.before do
-    Flipper.instance = Flipper.new(Flipper::Adapters::Memory.new)
+  Flipper.configure do |c|
+    c.default { Flipper.new(Flipper::Adapters::Memory.new) }
   end
 end