Collective.contact.core

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- Add image path when exporting
[boulch]

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- In vocabulary.OrganizationTypesOrLevels, use `getRequest` instead
`context.REQUEST` to get the current request, in some case like when using a
`plone.restapi` endpoint, `context.REQUEST` could not have an `URL`.
[gbastien]
- Replaced SearchableText indexers by IDynamicTextIndexExtender adapters.
So another extender using IDynamicTextIndexExtender also works (like
collective.behavior.internalnumber).
[sgeulette]

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- Added `utils.get_position_type_name` that will return a `position_type name`
for a given `directory` and `position_type token`.
[gbastien]

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- Added robot test for collective.contatc.widget 1.12 version.
[daggelpop]

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- Add new `enterprise number` field for organization content type
[laulaz]
- Updated Title to work with transmogrifier
[sgeulette]
- Updated birthday widget to manage dates range
[sgeulette]
- Added `create_organization.png` icon useable if necessary
[gbastien]

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- Add Transifex.net service integration to manage the translation process.
[macagua]
- Add Spanish translation
[macagua]
- Removed duplicated code displaying two times the logo in organization view.
[gbastien]