AO3-7408 Change subtitle not title for Request Invitations page

Author: jmalark

app/controllers/user_invite_requests_controller.rb

@@ -11,7 +11,7 @@ def index
   # GET /user_invite_requests/new
   # GET /user_invite_requests/new.xml
   def new
-    @page_title = ts('New User Invitation Request')
+    @page_subtitle = t(".page_title")
     if AdminSetting.request_invite_enabled?
       if logged_in?
         @user = current_user

config/locales/controllers/en.yml

@@ -376,6 +376,9 @@ en:
     status:
       ban_notice_html: Your account has been banned. You are not permitted to post or edit content on AO3. Please check your email or %{contact_abuse_link} for more information.
       suspension_notice_html: Your account has been suspended until %{suspended_until}. You cannot post, edit, or delete content until your suspension has ended. Please check your email or %{contact_abuse_link} for more information.
+  user_invite_requests:
+    new:
+      page_title: Request Invitations 
   works:
     create:
       draft_notice_html: Draft was successfully created. It will be %{scheduled_for_deletion_bold} on %{deletion_date}.

features/other_a/invite_request.feature

@@ -7,6 +7,7 @@ Feature: Invite requests
       And I am logged in as "user1"
     When I try to invite a friend from my user page
       And I follow "Request invitations"
+    Then the page title should include "Request Invitations"
     When I fill in "How many invitations would you like? (max 10)" with "3"
       And I fill in "Please specify why you'd like them:" with "I want them for a friend"
       And I press "Send Request"