Some tests fail if default encoding is not UTF-8

[alerosmile]

This is probably a bug in some implementations of PropertyValue.getValueAsString(). To convert the byte array to a string, the String(byte[], Charset) should be used.

The tests also fail if the testOutput folder in the example module does not exist.

[alerosmile]

@jorabin I see that my PR #85 has made it to the develop branch. We now have a problem with unicode characters in some username which are not decoded properly because the default encoding is not UTF-8 in our environment. Could you please create the new release 2.2.5 inlcuding this fix?