separated failing test into smaller test cases
fixed test case testPrettyXmlSerializer()
fixed problem with incorrect rendering of NCR value
added test testEscapeXml_recognizeUnicodeChars()
removed "transSpecialEntitiesToNCR" flag:
unused
"transSpecialEntitiesToNCR" property from CleanerProperties is a synonim
of recognizeUnicodeChars
translateSpecialEntitiesToNCR replaced with recognizeUnicodeChars