configitems: register the 'web.view' config

mercurial/configitems.py

@@ -748,6 +748,9 b" coreconfigitem('web', 'style',"
 coreconfigitem('web', 'templates',
     default=None,
 )
+coreconfigitem('web', 'view',
+    default='served',
+)
 coreconfigitem('worker', 'backgroundclose',
     default=dynamicdefault,
 )

mercurial/hgweb/hgweb_mod.py

@@ -482,8 +482,8 b' def getwebview(repo):'
 
     The option has been around undocumented since Mercurial 2.5, but no
     user ever asked about it. So we better keep it undocumented for now."""
-    viewconfig = repo.ui.config('web', 'view', 'served',
-                                untrusted=True)
+    # experimental config: web.view
+    viewconfig = repo.ui.config('web', 'view', untrusted=True)
     if viewconfig == 'all':
         return repo.unfiltered()
     elif viewconfig in repoview.filtertable: