Fix attributes passed to dropdown

app/views/projects/protected_branches/_create_protected_branch.html.haml

@@ -24,18 +24,16 @@
           .col-md-10
             .merge_access_levels-container
               = dropdown_tag('Select',
-                             options: { toggle_class: 'js-allowed-to-merge js-multiselect wide',
-                             dropdown_class: 'dropdown-menu-user dropdown-menu-selectable',
-                             data: { field_name: 'protected_branch[merge_access_levels_attributes][0][access_level]', input_id: 'merge_access_levels_attributes' }})
+                             options: { toggle_class: 'js-allowed-to-merge js-multiselect wide', dropdown_class: 'dropdown-menu-user dropdown-menu-selectable', filter: true,
+                             data: { input_id: 'merge_access_levels_attributes', default_label: 'Select' } })
         .form-group
           %label.col-md-2.text-right{ for: 'push_access_levels_attributes' }
             Allowed to push:
           .col-md-10
             .push_access_levels-container
               = dropdown_tag('Select',
-                             options: { toggle_class: 'js-allowed-to-push js-multiselect wide',
-                             dropdown_class: 'dropdown-menu-user dropdown-menu-selectable',
-                             data: { field_name: 'protected_branch[push_access_levels_attributes][0][access_level]', input_id: 'push_access_levels_attributes' }})
+                             options: { toggle_class: 'js-allowed-to-push js-multiselect wide', dropdown_class: 'dropdown-menu-user dropdown-menu-selectable', filter: true,
+                             data: { input_id: 'push_access_levels_attributes', default_label: 'Select' } })
 
     .panel-footer
       = f.submit 'Protect', class: 'btn-create btn', disabled: true