expose the portal_types blacklist to the user interface
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/plone/app/multilingual/browser/templates/migration.pt
fix i18n msgids
Merge remote-tracking branch 'upstream/master'
typo
need to initialize blacklist
Merge pull request #31 from pysailor/master

Allow the user to define list of atomic content types that will not be traversed