This hopefully fixes an odd macOS specific focus issue.
It also moves the dialog to the popup position when
showing the same dialog using the editor-mixer and later
a detached mixer.
This is mostly a simple lexical search+replace but the absence of operator< for
std::weak_ptr<T> leads to some complications, particularly with Evoral::Sequence
and ExportPortChannel.
Copyright-holder and year information is extracted from git log.
git history begins in 2005. So (C) from 1998..2005 is lost. Also some
(C) assignment of commits where the committer didn't use --author.
* consistent behavior (Route, VCA)
* non-modal
* a single color picker for each RouteUI/VCA at most
* fix bug: VCA picker staying around even when VCA was deleted
