improve buildout setup and fix version dependencies for Plone 4.2 tests
fix Plone42 test setup
changenote plone42 env fix
Add a workflow transition selection field to the icalendar import form.
we now have a workflow set up. lets publish all contents
- Fix the path for catalog search in ical importer. This fixes an issue, where
  no existing events could be found when importing a ical file again in virtual
  hosting environments. Also, search for any existing events, not only what the
  user is allowed to see.
O.K. revert the workflow selection field stuff. the vocab gives us _all_ transitions from all workflows, even if we cannot apply them to newly created content. better use contentrules for now.