Keep track of issue description changes (#746).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4954 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/journals/diff.html.erb

@@ -0,0 +1,10 @@
+<h2><%=h @issue.tracker %> #<%= @issue.id %></h2>
+<p><%= authoring @journal.created_on, @journal.user, :label => :label_updated_time_by %></p>
+
+<div class="text-diff">
+<%= simple_format_without_paragraph @diff.to_html %>
+</div>
+
+<p><%= link_to l(:button_back), issue_path(@issue), :onclick => 'history.back(); return false;' %></p>
+
+<% html_title "#{@issue.tracker.name} ##{@issue.id}: #{@issue.subject}" %>