feat(valdrForItem):  Add option to disable valdr validation on form items that have 'no-valdr-validation' attribute set.
feat(valdrMessage):  Add option to disable adding of valdr-message on form items that have 'no-valdr-validation' attribute set.
refactor:  Rename attribute 'no-valdr-validation' to 'valdr-no-validation'
Merge pull request #41 from B8li/master

feat(core): Add option to disable valdr validation on specific form elements