Collective.deletepermission

------------------

- Fix protection of manage_delObjects with "Delete objects".
In certain situations, when only having the permission to delete the
content ("Delete portal content") but not the permission to delete from the
the parent container ("Delete objects" on the parent) deleting was possible
even though it shouldn't have been.
[jone]

------------------

- Copy no longer requires "Delete portal content".
Requiring "Delete portal content" was introduced accidentally
for copying because of a patch for cutting.
[jone]

------------------

- Only show "Delete" action with "Delete objects" on the container.
[jone]

----------------

- Do not require 'Delete portal content' permission when renaming an object.
[buchi]

----------------

- Init release
[mathias.leimgruber]