Starrers view: fix search icon, change placeholder, fix "no starrers" when search does not match

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

@@ -10,21 +10,24 @@
       = form_tag request.original_url, method: :get, class: 'form-inline user-search-form flex-users-form' do
         .form-group
           .position-relative
-            = search_field_tag :search, params[:search], { placeholder: _('Find starrers by name'), class: 'form-control', spellcheck: false }
+            = search_field_tag :search, params[:search], { placeholder: _('Search'), class: 'form-control', spellcheck: false }
             %button.user-search-btn{ type: "submit", "aria-label" => _("Submit search") }
               = icon("search")
-            .dropdown.inline.user-sort-dropdown
-              = dropdown_toggle(starrers_sort_options_hash[@sort], { toggle: 'dropdown' })
-              %ul.dropdown-menu.dropdown-menu-right.dropdown-menu-selectable
-                %li.dropdown-header
-                  = _("Sort by")
-                - starrers_sort_options_hash.each do |value, title|
-                  %li
-                    = link_to filter_starrer_path(sort: value), class: ("is-active" if @sort == value) do
-                      = title
+          .dropdown.inline.user-sort-dropdown
+            = dropdown_toggle(starrers_sort_options_hash[@sort], { toggle: 'dropdown' })
+            %ul.dropdown-menu.dropdown-menu-right.dropdown-menu-selectable
+              %li.dropdown-header
+                = _("Sort by")
+              - starrers_sort_options_hash.each do |value, title|
+                %li
+                  = link_to filter_starrer_path(sort: value), class: ("is-active" if @sort == value) do
+                    = title
 - if @starrers.size > 0
   .row.prepend-top-10
     = render partial: 'starrer', collection: @starrers, as: :starrer
   = paginate @starrers, theme: 'gitlab'
 - else
-  .nothing-here-block Nobody has starred this repository yet
+  - if params[:search].present?
+    .nothing-here-block No starrers matched your search
+  - else
+    .nothing-here-block Nobody has starred this repository yet