TRUNK-5135 Deprecate @Verifies
all usages of @Verifies and @verifies were removed in TRUNK-5122
and thus @Verifies is deprecated and flagged using checkstyle
Cleanup and add tests to ConceptAttributeTypeValidatorTest
* add setUp method preparing variables needed for tests to remove
duplication in test setup
* split tests for null, empty, whitespace name since they are
independent
* add assertions for error code so we ensure that when devs refactor
the code the user will still get the excpected error message
* move happy path tests to the end, which makes side by side reading of
code and test easy
