display revision numbers

revision numbers are useful for orientation when browsing
through the changelog

templates/changelogentry-gitweb.tmpl

@@ -1,14 +1,14 b''
 <div>
 <a class="title" href="?cmd=changeset;node=#node#;style=gitweb"><span class="age">#date|age# ago</span>#desc|firstline|escape#</a>
 </div>
 <div class="title_text">
 <div class="log_link">
 <a href="?cmd=changeset;node=#node#;style=gitweb">changeset</a><br/>
 </div>
-<i>#author|obfuscate# [#date|rfc822date#]</i><br/>
+<i>#author|obfuscate# [#date|rfc822date#] rev #rev#</i><br/>
 </div>
 <div class="log_body">
 #desc|escape|addbreaks#
 <br/>
 <br/>
 </div>