* Most cases don't have other text together with a ResourceId, so handle an
isolated ResourceId specially and manually render it.
* Further work - we could cache the name the same way as the RichResourceText
does. So far it doesn't seem to appear on profiling.
* This allows us to add rich text support much more easily into other itemviews
like RDTableView.
* We set it up for debug messages so that resource links in debug messages can
be linked.
* This is used primarily for the buffer/mesh viewer to be able to pin
the index/element column to the left side, group columns together with
a noticeable separator, and other minor tweaks.
* Unfortunately due to tight private coupling and lack of virtual
functions in the QTableView and QHeaderView, a few unrelated functions
have to be re-implemented to point to our own header.
baldurk