hgweb: show help with verbose sections included

This makes sure we see the same help info as with 'hg help <command> --verbose'
on the command line, that is, with verbose sections included.

mercurial/hgweb/webcommands.py

@@ -902,6 +902,7 b' def help(web, req, tmpl):'
 
     u = webutil.wsgiui()
     u.pushbuffer()
+    u.verbose = True
     try:
         commands.help_(u, topicname)
     except error.UnknownCommand: