Improve coverage
Remove code not touched by tests
Include tests for RemoveItemFromListTile view
Remove the (unused) RemoveTileWidget
Remove needless parts on development
Update changelog
Revert "Remove code not touched by tests"

This reverts commit ea9af93a12b12c13736a4825a5a62c5b049f49fe.

@tcurvelo seems this code is used indeed, at lesst moving an item inside a list tail fails.

Conflicts:

	src/collective/cover/content.py
Merge branch 'master' into coverage

Conflicts:
	CHANGES.rst
Fix changelog
Merge pull request #321 from collective/coverage

Improve coverage