More restricted visibility changes

Bug fixes and new tests for the restricted visibility changes.

app/helpers/application_settings_helper.rb

@@ -29,7 +29,8 @@ module ApplicationSettingsHelper
       checkbox_name = 'application_setting[restricted_visibility_levels][]'
 
       label_tag(checkbox_name, class: css_class) do
-        check_box_tag(checkbox_name, level, checked, autocomplete: 'off',
+        check_box_tag(checkbox_name, level, checked,
+                      autocomplete: 'off',
                       'aria-describedby' => help_block_id) + name
       end
     end

lib/api/project_snippets.rb

@@ -51,13 +51,13 @@ module API
 
         attrs = attributes_for_keys [:title, :file_name, :visibility_level]
         attrs[:content] = params[:code] if params[:code].present?
-        @snippet = CreateSnippetservice.new(user_project, current_user,
+        @snippet = CreateSnippetService.new(user_project, current_user,
                                             attrs).execute
 
-        if @snippet.saved?
-          present @snippet, with: Entities::ProjectSnippet
-        else
+        if @snippet.errors.any?
           render_validation_error!(@snippet)
+        else
+          present @snippet, with: Entities::ProjectSnippet
         end
       end