* fix multi status answer for PUT and DELETE

* add unit test

* remove comments : documentation rules !

* update tests

* send messages for multiple add / update / delete

- fix a bug counting multiple failed adds
- fix message(*)Error not returning data when they should do

* update documentation

* Revert "update documentation"

This reverts commit 68596a2f.

* Revert "send messages for multiple add / update / delete"

This reverts commit d582862e.

* Revert "update tests"

This reverts commit 9702d3c5.

* Revert "remove comments : documentation rules !"

This reverts commit 3e8d78c3.

* Revert "add unit test"

This reverts commit 853f563a.

* Revert "fix multi status answer for PUT and DELETE"

This reverts commit 536e336e.

* update documentation

* add mesages for multiple add / update / delete

- fix bug in failed add count

* do not populate twice the collection of deleted items