v4: Validation states on custom forms#19139

Merged

mdo merged 2 commits intov4-devfrom

v4-custom-forms-validation

Feb 14, 2016

Commits on Feb 9, 2016

Alternate fix to #17965: Updates to use the new class name and adds some basic docs for custom checkbox/radio validation
mdo
committed

Commits on Feb 14, 2016

Merge branch 'v4-dev' into v4-custom-forms-validation
mdo
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