set text of front-page
get dx-collections (again)
Merge branch 'master' into migrations
auto-checkout Product.contentmigrations
More tests for migration
Remove unused imports; whitespace cleanup
Isolate atct migration code to remove dependencies

move the atct migration code to .migration and change the browser view
to return an error message if we can not import Products.contentmigration
and thus not import .migration.
Migrate ATFile + tests
Migrate ATImage + tests
Migrate ATImages without image data
Migrate ATLink + tests
Migrate ATNewsItem + tests
rename migrate_NewsItems() - migrate_newsitems()
Call all migrate funcs in MigrateFromATContentTypes-View