Log Message:
Update plone3 package to 3.0.6.

Change log

* Various tests were enhanced to increase our test coverage
* Implement unlocking for content which does not use portal_factory
  and for LinguaPlone translations.
* Add a method to cleanup persistent schemas from content objects
  which were created by the 'update schema' feature from older
  Archetypes releases. This is available through the ZMI.
* Correct removing of all roles from a group. This fixes This fixes 6994.
* Correct generation of session cookies for long userids. This fixes
  problems with OpenID2 accounts.
* Correct handling of unicode arguments for
  acl_users.enumerateUsers. This fixes zope-pas bug 189627.
* Kupu updates:
    o Correct full screen mode. This fixes 7473.
    o Correct intenal link insertion for IE. This fixes 7494.
    o Correct stripping out of anchor to top of current page. This fixes 7680.
    o The 'Home' link nows goes to the content root instead of the
      Plone root. This fixes 7713.
    o 'Link using UIDs' broke indexing of richt text fields with
      non-ASCII characters. This fixes 7728.
    o Update the flags and languages list. This fixes 7441.
    o  Revert internal change in language selector code in the
       plone.app.i18n release from Plone 3.0.5 in the language
       selector widget which broke LinguaPlone.
    o Fix lock timeout which was set by default to 12 minutes, it is
      now set to maxtimeout (71582788 minutes). This fixes 7358.
    o Fix TypeError when an anonymous user locks content. This fixes 7246.

Updated packages

    * archetypes.kss 1.2.6
    * plone.app.i18n 1.0.3
    * plone.app.controlpanel 1.0.4
    * plone.app.linkintegrity 1.0.5
    * plone.app.vocabularies 1.0.3
    * plone.locking 1.0.5
    * plone.session 1.2
    * Archetypes 1.5.6
    * CMF 2.1.1
    * CMFPlone 3.0.6
    * PloneLanguageTool 2.0.2
    * PlonePAS 3.2
    * PloneTranslations 3.0.11
    * PluggableAuthService 1.5.3
    * kupu 1.4.8