Fixes #14013 - add a setting for default owner of new hosts

fixes #18815 - VMware vSphere Disk Mode support

Fixes #18783,#18804 - replace inline helps with label helps

Fixes #18591 - powerStatus in redux

Fixes #14492 - Unify delete and minimize for dashboard widgets

Originally the idea was for the buttons to have a different effect on
the widgets, however with changes introduced later on these differences
have been reduced to being insignificant.

Fixes #18768 - remove generic inline helps

Fixes #18514 - switch prefix/mask fields

Add pxe_loader to host REST

Add the field `pxe_loader` to the GET part of the hosts/
It is possible to set or update (POST, UPDATE), but not to read it

fixes #18574 - add ip6 address to the REST api results

Fixes #18560 - Remove searchbar from 403, change 403 style