configitems: register the 'web.refreshinterval' config

mercurial/configitems.py

@@ -634,6 +634,9 b" coreconfigitem('web', 'port',"
 coreconfigitem('web', 'prefix',
     default='',
 )
+coreconfigitem('web', 'refreshinterval',
+    default=20,
+)
 coreconfigitem('worker', 'backgroundclose',
     default=dynamicdefault,
 )

mercurial/hgweb/hgwebdir_mod.py

@@ -29,6 +29,7 b' from .common import ('
 from .request import wsgirequest
 
 from .. import (
+    configitems,
     encoding,
     error,
     hg,
@@ -124,10 +125,11 b' class hgwebdir(object):'
         self.refresh()
 
     def refresh(self):
-        refreshinterval = 20
         if self.ui:
-            refreshinterval = self.ui.configint('web', 'refreshinterval',
-                                                refreshinterval)
+            refreshinterval = self.ui.configint('web', 'refreshinterval')
+        else:
+            item = configitems.coreitems['web']['refreshinterval']
+            refreshinterval = item.default
 
         # refreshinterval <= 0 means to always refresh.
         if (refreshinterval > 0 and