make validation strict in directmap (input and output) -- was only validate attributes before. fix TDL tests in terms of validation -- unfortunately SQLITE has a problem with JOINS. Adapted the tdl test not to fail but the problem remains. fix bug in testWolfilter option parsing (-f). Bugfix in deserialization validation. Tolerate empty arrays
Merge branch 'master' of https://github.com/mbarbos/Wolframe