add PFGDataFrid and PublicJobVacancy to dependencies
update buildout

Add additional packages to sources, enable auto-checkout, use Plone 4.1.4 (it's what osha currently uses).
add helper views that provide vocabularies for the form
add a GS profile with exported application form

This profile should import the application form automatically, but it doesn't work yet, so currently manual import is needed.
fix tests