Collective.volto.formsupport

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- Fix permission checks.
[cekk]

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- [fix] do not send attachments multiple times.
[cekk]

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- Convert field types: checkbox => multiple_choice and radio => single_choice
to follow new schema in volto-form-block (https://github.com/collective/volto-form-block/pull/7).
[cekk]

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- Added Brazilian Portuguese (pt_BR) translations.
[ericof]

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- Changed the classifiers inside setup.py. This should fix some installation
issues.
[arsenico13]

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- NEW: The submit-form entry-point now takes into account if a field is "marked"
with "use_as_reply_to" and use that field for "from" and "reply to".
[arsenico13]