Reduced the size of the gravatar on the issue history

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@1965 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/issues/_history.rhtml

 <% reply_links = authorize_for('issues', 'edit') -%>
 <% for journal in journals %>
   <div id="change-<%= journal.id %>" class="journal">
-    <%= gravatar(journal.user.mail.blank? ? "" : journal.user.mail, :size => "48") %>
+    <%= gravatar(journal.user.mail.blank? ? "" : journal.user.mail, :size => "32") %>
     <h4><div style="float:right;"><%= link_to "##{journal.indice}", :anchor => "note-#{journal.indice}" %></div>
     <%= content_tag('a', '', :name => "note-#{journal.indice}")%>
     <%= format_time(journal.created_on) %> - <%= journal.user.name %></h4>

public/stylesheets/application.css

@@ -637,7 +637,7 @@ div.issue table img.gravatar {
 
 #history img.gravatar {
 	padding: 3px;
-	margin: 0 2em 1em 0;
+	margin: 0 1em 1em 0;
 	float: left;
 }