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

This line for filelogentry template is copied from shortlogentry. The
information is already displayed in paper style, so no change to python code is
needed. Tests are unaffected.

mercurial/templates/gitweb/map

@@ -293,6 +293,7 b" filelogentry = '"
     <td>
       <a class="list" href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">
         <b>{desc|strip|firstline|escape|nonempty}</b>
+        <span class="logtags">{inbranch%inbranchtag}{branches%branchtag}{tags%tagtag}{bookmarks%bookmarktag}</span>
       </a>
     </td>
     <td class="link">