Ftw.referencewidget

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- Fix not being able to edit portal_registry entries in frontend [Nachtalb]

There was no version number set for the ``ftw.referencewidget`` package. As a result of this upgradesteps wont be shown in ``../manage-upgrades`` from `ftw.upgrade <https://github.com/4teamwork/ftw.upgrade>`_.
So the first upgradesetp ``Upgrade ftw.referencewidget:default to 20181112105705: Fix registry field frontend edit`` must be installed via the ZMI under ``../portal_setup/manage_fullImport``. This sets the version for the package and so further upgrades can be installed via ``../manage-upgrades``.

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- Fix UnicodeDecodeError. [mbaechtold]

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- No longer use "plone.directives.form". [mbaechtold]
- Fix an issue when loading a page with GridDataField turns out in an error [Nachtalb]

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- Fix display issue with search current path only in old chrome browsers. [mathias.leimgruber]

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- Fix searching for current path only. [mathias.leimgruber]
- Fix UniCodeDecodeError while displaying the news date. [mathias.leimgruber]

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- Add option to search in current path. [Nachtalb]
- Show localized news date in title for all news items [Nachtalb]