i18n: show localized messages for commands/extensions in hgweb help top (issue3383) in hgweb help top page, help topics are localized, but abstracts of commands and extensions are not, although these are already translated. it is because localized messages for them should be explicitly looked up by original ones. this patch looks localized messages up for each commands/extensions.

--- a/mercurial/hgweb/webcommands.py	Thu Apr 19 23:36:42 2012 +0200
+++ b/mercurial/hgweb/webcommands.py	Thu Apr 19 20:54:56 2012 +0900
@@ -806,7 +806,7 @@
 def _getdoc(e):
     doc = e[0].__doc__
     if doc:
-        doc = doc.split('\n')[0]
+        doc = _(doc).split('\n')[0]
     else:
         doc = _('(no help text available)')
     return doc