Fixes #28849 - Long role names are cut off in the roles UI

Fixes #29021 - Add titles to welcome pages

Fixes #29010 - graphql: fix creating object by user with create permission

Fixes #28754 - Disabling MAC address input for visualization

Fixes #29006 - Netmask is optional in API docs

Fixes #28898 - show unique machine_types/flavors in GCE

Fixes #28965 - calculate PXE UID from OS version

Fixes #28929 - allow complex types in settings api

Previously the settings api only accepted stringified forms of complex
settings values, while returning the correctly typed ones.

This change allows setting both stringified and non stringified forms.

Fixes #28858 - allow delete user with multiple groups

Fixes #28846 - PPC64 pxedir location