Allow Poll::Question::Answer edit

As requested by #1992

spec/features/admin/poll/questions/answers/answers_spec.rb

@@ -0,0 +1,51 @@
+require 'rails_helper'
+
+feature 'Answers' do
+
+  background do
+    admin = create(:administrator)
+    login_as (admin.user)
+  end
+
+  scenario 'Create' do
+    question = create(:poll_question)
+    title = 'Whatever the question may be, the answer is always 42'
+    description = "The Hitchhiker's Guide To The Universe"
+
+    visit admin_question_path(question)
+    click_link 'Add answer'
+
+    fill_in 'poll_question_answer_title', with: title
+    fill_in 'poll_question_answer_description', with: description
+
+    click_button 'Save'
+
+    expect(page).to have_content(title)
+    expect(page).to have_content(description)
+  end
+
+  scenario 'Update' do
+    question = create(:poll_question)
+    answer = create(:poll_question_answer, question: question)
+
+    visit admin_answer_path(answer)
+
+    click_link 'Edit'
+
+    old_title = answer.title
+    new_title = 'Ex Machina'
+
+    fill_in 'poll_question_answer_title', with: new_title
+
+    click_button 'Save'
+
+    expect(page).to have_content('Changes saved')
+    expect(page).to have_content(new_title)
+
+    visit admin_question_path(question)
+
+    expect(page).to have_content(new_title)
+    expect(page).to_not have_content(old_title)
+  end
+
+end