Update poll question answers translatable fields

We needed to bring back support for CKEditor in our translatable form,
which we had temporarily remove.

And now we support CKEditor in our translatable specs, and so we can
remove the duplicated specs for poll question answers.

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

@@ -7,6 +7,12 @@ feature 'Answers' do
     login_as admin.user
   end
 
+  it_behaves_like "translatable",
+                  "poll_question_answer",
+                  "edit_admin_answer_path",
+                  %w[title],
+                  { "description" => :ckeditor }
+
   scenario 'Create' do
     question = create(:poll_question)
     title = 'Whatever the question may be, the answer is always 42'
@@ -15,8 +21,8 @@ feature 'Answers' do
     visit admin_question_path(question)
     click_link 'Add answer'
 
-    fill_in 'poll_question_answer_title_en', with: title
-    fill_in 'poll_question_answer_description_en', with: description
+    fill_in 'Answer', with: title
+    fill_in 'Description', with: description
 
     click_button 'Save'
 
@@ -33,8 +39,8 @@ feature 'Answers' do
     visit admin_question_path(question)
     click_link 'Add answer'
 
-    fill_in 'poll_question_answer_title_en', with: title
-    fill_in 'poll_question_answer_description_en', with: description
+    fill_in 'Answer', with: title
+    fill_in 'Description', with: description
 
     click_button 'Save'
 
@@ -53,7 +59,7 @@ feature 'Answers' do
     old_title = answer.title
     new_title = 'Ex Machina'
 
-    fill_in 'poll_question_answer_title_en', with: new_title
+    fill_in 'Answer', with: new_title
 
     click_button 'Save'