Update page object views definition

- To order them alphabitically;
and
- To replace element with an standardized one

qa/qa/page/project/issue/new.rb

@@ -5,18 +5,18 @@ module QA
     module Project
       module Issue
         class New < Page::Base
+          view 'app/views/shared/form_elements/_description.html.haml' do
+            element :issue_description_textarea, "render 'projects/zen', f: form, attr: :description" # rubocop:disable QA/ElementWithPattern
+          end
+
           view 'app/views/shared/issuable/_form.html.haml' do
-            element :submit_issue_button, 'form.submit "Submit' # rubocop:disable QA/ElementWithPattern
+            element :issuable_create_button
           end
 
           view 'app/views/shared/issuable/form/_title.html.haml' do
             element :issue_title_textbox, 'form.text_field :title' # rubocop:disable QA/ElementWithPattern
           end
 
-          view 'app/views/shared/form_elements/_description.html.haml' do
-            element :issue_description_textarea, "render 'projects/zen', f: form, attr: :description" # rubocop:disable QA/ElementWithPattern
-          end
-
           def add_title(title)
             fill_in 'issue_title', with: title
           end