Design.plone.contenttypes

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- Update default summary serializer to better handle geolocation information.
[lucabel]

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- Optionally add image_scales and image_field in Summary serializer.
[mamico]

- Add design-utils view that shows all available utility views.
[cekk]

- Add user action that points to design-utils view.
[cekk]

- Add export-incarichi view that allows to download a csv file with all Persona and their roles.
[cekk]

- Add tipologia_bando to summary serializer.
[cekk]

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- Handle cost with empty text block in previous upgrade-step.
[cekk]

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- Add upgrade-step to set a default cost text for events.
[cekk]

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- Set event tickets cost as required field
[pnicolli]

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- Add permission check to solve problem accessing private resources with
anonymous user
[lucabel]