Adds a css class (overdue) to overdue issues on issue lists and detail views (#2337).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2140 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/issues_helper.rb

@@ -36,6 +36,7 @@ module IssuesHelper
   # Returns a string of css classes that apply to the given issue
   def css_issue_classes(issue)
     s = "issue status-#{issue.status.position} priority-#{issue.priority.position}"
+    s << ' overdue' if issue.overdue?
     s
   end