added support for displaying HTTP error codes (particularly interesting ones are 403 and 406 which screw up data retrieval and DBMS fingerprinting badly)

lib/core/option.py

@@ -1156,6 +1156,7 @@ def __setKnowledgeBaseAttributes(flushAll=True):
     kb.docRoot         = None
     kb.dynamicMarkings = []
     kb.endDetection    = False
+    kb.httpErrorCodes  = {}
     kb.errorIsNone     = True
     kb.formNames       = []
     kb.headersCount    = 0