Collective.portaltabs

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- Nothing changed yet.

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- Restored controlpanel icons no more delivered by Plone 4.3
[keul]
- Fixed link to navigation controlpanel
[keul]
- Added option for visibility condition of the action
[keul]

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* updated to Plone 4.1+ security and new "Site Administrator" role [keul]
* support for query expression starting with ``/``, that generate links to
internal section of the site [keul]
* tabs settings panel is now protected with a specific permission [keul]
* protected the use of ``tal:``, ``python:`` and ``$`` with a proper permission
[keul]
* removed the usage of CMF properties. General configuration migrated to
Plone registry
[keul]
* Added tests
[keul]

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* added input validations [keul]
* more help texts and translations [keul]
* added a direct link to the ZMI manage section [keul]
* added a way to upload Generic Setup compatible ``actions.xml`` file, to
automatically load actions [marco.mariani]

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* initial release