Changelog

• Added version warning to Plone 3.X docs

  svx added a warning message about the version of Plone.

• Fixed missing qoute

  svx fixed a missing html template quote.

• Fixed link to u2d docs

  svx added a link to recent Plone documentation.

• Removed Plone 4 stuff from Plone 3 docs

  svx removed Plone 4 only documentation from Plone 3 docs.

• Updated zexp import/export

  svx did an update and fix about import/export of zexp.