hgweb: do not import templatefilters.revescape and websub as symbol

It will be enforced by the import checker.

mercurial/hgweb/hgweb_mod.py

@@ -10,7 +10,7 b' import contextlib'
 import os
 from mercurial import hg, hook, error, encoding, templater, util, repoview
 from mercurial import ui as uimod
-from mercurial.templatefilters import websub
+from mercurial import templatefilters
 from common import ErrorResponse, permhooks, caching
 from common import HTTP_OK, HTTP_NOT_MODIFIED, HTTP_BAD_REQUEST
 from common import HTTP_NOT_FOUND, HTTP_SERVER_ERROR
@@ -159,7 +159,7 b' class requestcontext(object):'
                              or req.url.strip('/') or self.repo.root)
 
         def websubfilter(text):
-            return websub(text, self.websubtable)
+            return templatefilters.websub(text, self.websubtable)
 
         # create the templater
 

mercurial/hgweb/webutil.py

@@ -12,7 +12,7 b' from mercurial import match, patch, erro'
 from mercurial import ui as uimod
 from mercurial.i18n import _
 from mercurial.node import hex, nullid, short
-from mercurial.templatefilters import revescape
+from mercurial import templatefilters
 from common import ErrorResponse, paritygen
 from common import HTTP_NOT_FOUND
 import difflib
@@ -315,7 +315,7 b' def changelistentry(web, ctx, tmpl):'
 
 def symrevorshortnode(req, ctx):
     if 'node' in req.form:
-        return revescape(req.form['node'][0])
+        return templatefilters.revescape(req.form['node'][0])
     else:
         return short(ctx.node())