Fixed the HTML in Questions django view (the closing div tags were in wrong places).
It is possible to add an additional text input next to a choice-multiple-freeform checkbox.

You can do this by adding
clarify_choices="{'checkbox1_value': 'checkbox1_hint', ...}"
to the Additional checks field.
It is possible to set some text that shows before the input field in the choice-freeform field.

For example the last option may be in the form: "[checkbox] Other [input field]".
Added verbose_name to Question text.

Other wise it showed as "None [Languaage]" in Django Admin.