Add message on starrers view when nobody has starred a repository yet

app/views/projects/starrers/index.html.haml

@@ -5,6 +5,7 @@
     %span.flex-project-title
       = _("Starrers of <strong>%{project_name}</strong>").html_safe % { project_name: sanitize_project_name(@project.name) }
     %span.badge.badge-pill= @starrers.size
+  - if @starrers.size > 0
     .nav-controls
       = form_tag request.original_url, method: :get, class: 'form-inline user-search-form flex-users-form' do
         .form-group
@@ -21,5 +22,8 @@
                   %li
                     = link_to filter_user_path(sort: value), class: ("is-active" if @sort == value) do
                       = title
-.row.prepend-top-10
+- if @starrers.size > 0
+  .row.prepend-top-10
     = render partial: 'starrer', collection: @starrers, as: :user
+-else
+  .nothing-here-block Nobody has starred this repository yet