Fixes #4521
Adds disableInArrayValidator check to Radio

I noticed MultiCheckbox was added in PR #4846 but not added to the Radio element, so this adds the ability to disable the InArrayValidator for Radio form elements.
Collection Input Filter fix messages
Remove trailing spaces
Fix for weird test trying to validate a CollectionInputFilter with a Input instead of a InputFilter
Remove unecessary test, and fix for validation groups on collections
fix for validation groups on collections
Old behavior failure test case (nested collections)
Remove dead code
Fix for direct property access
Remove trailing spaces
Revert names and use parent variables
Remove duplicated code
Direct property access and validation groups
Multiple function call fix
Updated Translator to TranslatorInterface
fix for unselected select multiple; added options use_hidden_element and unselected_value
fix for unselected select multiple; unit test for form
fix for unselected select multiple; dummy select if select multiple is unselected
fix for unselected select multiple; fix docblock for consistency