Add ability to toggle log filter

To test the output of warning functions it can be useful to disable the
log filter, producing the expected output instead of the limited output
that is used during normal operation.

pelican/log.py

@@ -167,6 +167,12 @@ class LimitLogger(SafeLogger):
 
     def __init__(self, *args, **kwargs):
         super(LimitLogger, self).__init__(*args, **kwargs)
+        self.enable_filter()
+
+    def disable_filter(self):
+        self.removeFilter(LimitLogger.limit_filter)
+
+    def enable_filter(self):
         self.addFilter(LimitLogger.limit_filter)
 
 logging.setLoggerClass(LimitLogger)