Removed User#display_name (replaced by User#name).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@578 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/mailer/_issue.rhtml

@@ -1,5 +1,5 @@
 <%=l(:label_issue)%> #<%= issue.id %> - <%= issue.subject %>
-<%=l(:field_author)%>: <%= issue.author.display_name %>
+<%=l(:field_author)%>: <%= issue.author.name %>
 <%=l(:field_assigned_to)%>: <%= issue.assigned_to ? issue.assigned_to.name : "-" %>
 <%=l(:field_status)%>: <%= issue.status.name %>