WICKET-5436 Implement BigIntegerConverter
WICKET-5437 When a ConversionException is thrown, its message is not used in the ValidationError
WICKET-5437 When a ConversionException is thrown, its message is not used in the ValidationError

Add a test case
WICKET-5437 When a ConversionException is thrown, its message is not used in the ValidationError

Fix the test
WICKET-5436 Implement BigIntegerConverter

Enable BigIntegerConverter by default
Pull Request #63 - Update versions in package.json and restate the comments in Gruntfile.js

contributed-by: Martin Funk
Pull Request #64 - Improve the JavaDocs for FeedbackMessages#hasMessage(int)

contributed-by: Paul Bors
ambiguous code