Tech debt: refactor URL + Email validation #8531
Description
While hacking on Jakarta + Payara 6 compatibility #8305 , I came across these errors (see screenshot).
Let's fix this:
- Move email + url validation classes and annotations to sub packages (where they belong...), refactor using code to reflect the relocation (7 classes)
- Make the Validator classes less complicated (some strange constructions in URLValidator with NPE etc????)
- Make the messages come from ValidationMessages.properties via standard mechanisms instead of Bundle.properties
- Fix the tests to not use internal classes but use the standard ways of testing ConstraintValidations