Fix style

- `reorder(nil)` is better than `reorder('')`
- Only use ASCII in comments

app/views/shared/_issues.html.haml

-- if @issues.reorder('').any?
+- if @issues.reorder(nil).any?
   - @issues.group_by(&:project).each do |group|
     .panel.panel-default.panel-small
       - project = group[0]

spec/features/projects/labels/issues_sorted_by_priority_spec.rb

+# coding: utf-8
 require 'spec_helper'
 
 feature 'Issue prioritization', feature: true do
@@ -72,7 +73,7 @@ feature 'Issue prioritization', feature: true do
       issue_7.labels << label_2 # 5
       issue_2.labels << label_3 # 6
       issue_4.labels << label_4 # 7
-      issue_6.labels << label_5 # 8  – No priority
+      issue_6.labels << label_5 # 8 - No priority
 
       login_as user
       visit namespace_project_issues_path(project.namespace, project, sort: 'priority')