1) force version pinnings 2) add sane pinnings suited for plone 4.3
pin hexagonit.recipe.download = 1.7
Add a short sleep after saving the custom field settings form to fix the failing
robot tests. For some reason, immediately re-opening the field settings form after
saving does not work in the robot test.
added missing Pinning for Pillow
added more missing versions pinnings
Merge master
Merge pull request #131 from plone/plone_4.3_pinnings

1) force version pinnings 2) add sane pinnings suited for plone 4.3