Collective.dms.basecontent

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- Fix fields width to 50% to keep fields on the left of the scan preview
[sgeulette]
- Test attribute existence to resolve a recatalog problem
[sgeulette]

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- Correct wrong metadata name in column
[sgeulette]
- Add a dmsdocument edit view including documentviewer to complete attributes after batch import.
[sgeulette]

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- Update the LocalRolesToPrincipals fields to use zope.schemaevent
[mpeeters]
- Integrated documentviewer
[vincentfretin]
- Add signed version
[vincentfretin, cedricmessiant]
- New default view for all documents
[vincentfretin, cedricmessiant]
- Allow tasks to be added to document
[fpeters, vincentfretin, cedricmessiant]

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- Corrected MANIFEST.in

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- Package created using templer
[cedricmessiant]
- Added portal types
[sgeulette]
- Related field
[davidconvent]
- LocalRolesToPrincipals field
[gauthierbastien]