* add api docu for this switch

- don't try to create a branch package when it already exists (#394646)
- when branching, respect develproject settings per default
- when branching, develproject can be overridden by adding a "nodevelproject" query parameter

- exchanged dpkg package by deb package provided by newer SUSE Distros

- new oem-recovery element

- added kiwirevision and id attributes to <image> tag

- fix element special case

- check validity of roles for new users in projects

  tags named in the schema

- new oem tags

  discarding the user entry

- schema changes from Jan (instsource)

* fix support for using native devices

* readd unwanted revert of some code in last commit