[validators] - Add validator for a checkbox to be checked and for a collection of checkboxes/radio-buttons to have anyone of them checked
[translations] - Add translations for 'Required checked field'
[form-view:form] - Remove all listeners when 'onremove' is called
[form-view:form] - Add 'response' as data sent to the callback
[admin-tags-form] - Update middleware, view and template to inherit from FormView
Merge branch 'refactor-admin-tags-form' into development