Fix Mocha XUnit test output.
Add 'uk_birthday' validator that accepts DD/MM/YYYY format.
Toggle validator when dosomething_uk module is enabled.
Merge pull request #3079 from DFurnes/unit-test-qa

Fix Mocha XUnit test output.
Merge pull request #3084 from DFurnes/uk-phone-validator

Add 'uk_birthday' validator that accepts DD/MM/YYYY format.
Revert "Add 'uk_birthday' validator that accepts DD/MM/YYYY format."
Merge pull request #3085 from DoSomething/revert-3084-uk-phone-validator

Revert "Add 'uk_birthday' validator that accepts DD/MM/YYYY format."