Merge pull request #19 from ledgersmb/master

sync over master branch
Merge pull request #21 from ledgersmb/master

sync over master branch
Fix #1166: Dates incorrectly showed in the web output (correctly in DB).
Merge pull request #101 from ehuelsmann/master

Fix ticket #1166: The DateTextBox widget expects a date object or string conforming to 'yyyy-mm-dd'