doc: ui_configure: Document the type: prefix argument to configure show

configure show supports arguments like type:primitive or type:node, but
this is not mentioned in the documentation.
high: resource: Support tags for resource management (fate#315101)

Adds support for tags in resource management.

To add a tag, set tag=value in the resource (like
description). Multiple tags are space-separated.

To start all tagged resources, use

resource start tag:<tag>