Ploneintranet.workspace

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- Add tests for ploneintranet.theme (to be moved there in time)
[pbauer, khink]
- Rename old importstep-handler marker from netsight-windowsauthplugin.
[fredvd]
- Added WorkspaceContainer content type
[wengole]
- Implemented Sidebar documents, events, todos and settings, added robot tests
[deroiste, giacomos, pilz, ckirchhoff]

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- Only show custom sharing viewlet on a workspace
[mattss]
- Include full participation policy description on
workspace sharing tab
[kaselis]
- Show participation policy roles on workspace sharing tab
[kaselis]
- Unicode tests
[wengole]

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- Initial release