Ftw-task

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- Add permissionmapping for ftw.lawgiver
[elioschmutz]

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- Updated translation.
[Julian Infanger]

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- Hide fields in task, using a dictionary instead of False or -1.
[Julian Infanger]

- onegov.ch approved: add badge to readme.
[jone]

- Use safe-html-transform for textfield (security audit).
[mathias.leimgruber]

- Workspace details PDF: do not show empty listings.
[jone]

- Fix task portlet for anonymous users and zope users. 5
[jone]

- Fix task creation for Plone 4.2. 4
[jone]

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- Fix history.txt
[mathias.leimgruber]

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- Use ftw.calendarwidget for datetime fields.
[mathias.leimgruber]

- Make Portlet work with Users that don't Userid as Loginname.
[tschanzt]

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- Add task view tests.
[jone]

- Fix template when task has no workflow.
[jone]

- Testing: use p.a.testing instead of PloneTestCase.
[jone]