added a file log (wesstats.log) as a logging target

website/stats.wesnoth.org/development.ini

@@ -85,7 +85,7 @@ templating.mako.reloadfromdisk = true
 keys = root, wesstats, sqlalchemy, auth
 
 [handlers]
-keys = console
+keys = console, filelog
 
 [formatters]
 keys = generic
@@ -97,7 +97,7 @@ handlers = console
 
 [logger_wesstats]
 level = DEBUG
-handlers =
+handlers = filelog
 qualname = wesstats
 
 [logger_sqlalchemy]
@@ -123,6 +123,12 @@ args = (sys.stderr,)
 level = NOTSET
 formatter = generic
 
+[handler_filelog]
+class=FileHandler
+level=NOTSET
+formatter=generic
+args=('wesstats.log', 'w')
+
 # If you create additional formatters, add them as a key to [formatters]
 [formatter_generic]
 format = %(asctime)s,%(msecs)03d %(levelname)-5.5s [%(name)s] %(message)s