new dictmulti code
fix tests and all templates for IDict
Show Invalid error when duplicate keys in a dict multi widget
Merge branch 'master' into dictmulti3.0
bug in remove for multi dict
Merge branch 'master' into dictmulti3.0

Conflicts:
	CHANGES.txt
Merge branch 'master' into dictmulti3.0

Conflicts:
	CHANGES.txt
Merge pull request #1 from zopefoundation/dictmulti3.0

Extension to the Multi widget to handle IDict fields