hgweb: show changeset branches/tags/bookmarks in file log (style=monoblue)

As for the gitweb style, this line for filelogentry template is copied from
shortlogentry. No change to python code is needed. Tests are unaffected.

mercurial/templates/monoblue/map

@@ -247,6 +247,7 b" filelogentry = '"
     <td>
       <a href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">
         {desc|strip|firstline|escape|nonempty}
+        <span class="logtags">{inbranch%inbranchtag}{branches%branchtag}{tags%tagtag}{bookmarks%bookmarktag}</span>
       </a>
     </td>
     <td class="nowrap">