Work around a direct use of pickles in ZODB ExportImport
Merge branch 'master' into copypaste

Conflicts:
	CHANGES.txt
Move test layer to a base file
Move .name attribute of test data to be a synonym for .id, to appease OFS
Make it easy to create SimpleItem test data
Add tests for copy/paste support
Merge pull request #1 from collective/copypaste

Add support for copy/paste