Started adding startupjs to issue page

app/views/projects/issues/_discussion.html.haml

+- add_page_startup_api_call discussions_path(@issue)
+
 - @gfm_form = true
 
 - content_for :note_actions do

app/views/projects/issues/show.html.haml

@@ -82,6 +82,7 @@
     #js-related-merge-requests{ data: { endpoint: expose_path(api_v4_projects_issues_related_merge_requests_path(id: @project.id, issue_iid: @issue.iid)), project_namespace: @project.namespace.path, project_path: @project.path } }
 
     - if can?(current_user, :download_code, @project)
+      - add_page_startup_api_call related_branches_project_issue_path(@project, @issue)
       #related-branches{ data: { url: related_branches_project_issue_path(@project, @issue) } }
         -# This element is filled in using JavaScript.