Collective.dms.mailcontent

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- Corrected empty dependency step causing unresolved warning.
[sgeulette]

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- Changed sender field from ContactChoice to ContactList (multiple values).
[sgeulette]
- Some corrections on encoding and index update
[sgeulette]

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- Add a recipients index, containing also the organisation chain UIDs [sgeulette]
- Updated reply_to field to allow dmsincomingmail and dmsoutgoingmail types. [sgeulette]
- Corrected indexer not working with 2 decorators. [sgeulette]
- Added display_backrefs on reply_to field. [sgeulette]
- Combined title and internal_reference_no in Title for OutgoingMail [sgeulette]
- Set internal_reference_no if empty [sgeulette]
- Add internal_reference_no in SearchableText [sgeulette]
- Display time on reception_date [sgeulette]
- Added option to set outgoing mail date at today [sgeulette]

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- Add a sender index, containing also the organisation chain UIDs [sgeulette]
- Add a sender_index metadata [sgeulette]
- Use the same permission to protect config view and configlet. [sgeulette]

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- Set original_mail_date as not required. [sgeulette]

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- Give access to configlet to Site Administrator [sgeulette].
- Renamed 'in_reply_to' field to avoid child index interference with plone.app.discussion [sgeulette]
- Updated buildout [sgeulette]
- Avoid None in internal_reference_number index. ZCatalog 3 compatibility. [sgeulette]
- Set original_mail_date as required. Added default value [sgeulette]