Ensure merge request header strings are internationalized

Several strings in merge request headers were not
internationalized. For all but one, there are existing strings
so this will improve GitLab internationalization without requiring
additional string translation.

Changelog: changed

app/views/projects/merge_requests/_mr_title.html.haml

@@ -32,20 +32,20 @@
         .dropdown-menu.dropdown-menu-right
           %ul
             - if can_update_merge_request
-              %li= link_to 'Edit', edit_namespace_project_merge_request_path(@project.namespace, @project, @merge_request)
+              %li= link_to _('Edit'), edit_namespace_project_merge_request_path(@project.namespace, @project, @merge_request)
               - if @merge_request.opened?
                 %li
                   = link_to @merge_request.work_in_progress? ? _('Mark as ready') : _('Mark as draft'), toggle_draft_merge_request_path(@merge_request), method: :put, class: "js-draft-toggle-button"
               %li{ class: [merge_request_button_visibility(@merge_request, true), 'js-close-item'] }
-                = link_to 'Close', merge_request_path(@merge_request, merge_request: { state_event: :close }), method: :put, title: 'Close merge request'
+                = link_to _('Close'), merge_request_path(@merge_request, merge_request: { state_event: :close }), method: :put, title: 'Close merge request'
             - if can_reopen_merge_request
               %li{ class: merge_request_button_visibility(@merge_request, false) }
-                = link_to 'Reopen', merge_request_path(@merge_request, merge_request: { state_event: :reopen }), method: :put, title: 'Reopen merge request'
+                = link_to _('Reopen'), merge_request_path(@merge_request, merge_request: { state_event: :reopen }), method: :put, title: 'Reopen merge request'
             - unless @merge_request.merged? || current_user == @merge_request.author
-              %li= link_to 'Report abuse', new_abuse_report_path(user_id: @merge_request.author.id, ref_url: merge_request_url(@merge_request))
+              %li= link_to _('Report abuse'), new_abuse_report_path(user_id: @merge_request.author.id, ref_url: merge_request_url(@merge_request))
 
         - if can_update_merge_request
-          = link_to 'Edit', edit_project_merge_request_path(@project, @merge_request), class: "d-none d-md-block btn gl-button btn-default btn-grouped js-issuable-edit", data: { qa_selector: "edit_button" }
+          = link_to _('Edit'), edit_project_merge_request_path(@project, @merge_request), class: "d-none d-md-block btn gl-button btn-default btn-grouped js-issuable-edit", data: { qa_selector: "edit_button" }
 
         - if can_update_merge_request && !are_close_and_open_buttons_hidden
           = render 'projects/merge_requests/close_reopen_draft_report_toggle'

app/views/projects/merge_requests/_nav_btns.html.haml

@@ -5,7 +5,7 @@
 .js-csv-import-export-buttons{ data: { show_export_button: "true", issuable_type: issuable_type, issuable_count: issuables_count_for_state(issuable_type.to_sym, params[:state]), email: notification_email, export_csv_path: export_csv_project_merge_requests_path(@project, request.query_parameters), container_class: 'gl-mr-3' } }
 
 - if @can_bulk_update
-  = button_tag "Edit merge requests", class: "gl-button btn btn-default gl-mr-3 js-bulk-update-toggle"
+  = button_tag _("Edit merge requests"), class: "gl-button btn btn-default gl-mr-3 js-bulk-update-toggle"
 - if merge_project
-  = link_to new_merge_request_path, class: "gl-button btn btn-confirm", title: "New merge request" do
-    New merge request
+  = link_to new_merge_request_path, class: "gl-button btn btn-confirm", title: _("New merge request") do
+    = _('New merge request')

locale/gitlab.pot

@@ -12265,6 +12265,9 @@ msgstr ""
 msgid "Edit issues"
 msgstr ""
 
+msgid "Edit merge requests"
+msgstr ""
+
 msgid "Edit public deploy key"
 msgstr ""