ArdourButton::set_related_action() uses and subscribes to
tooltips from actions.
Explicitly calls to Gtkmm2ext::UI::instance()->set_tip will
have to be done after set_related_action and be overridden
when the action's tooltip changes.
Found via `codespell -q 3 -S "*.pdf,*.po,./.git,*.tosc,./waf,./share/patchfiles,./libs,./msvc_extra_headers,./share/web_surfaces,*.patch" -L acount,addin,ane,ba,buss,busses,caf,capela,devine,disconnectin,discreet,doubleclick,envolution,filetest,fo,ghandi,homs,hsi,layed,maschine,mis,nd,ontop,pass-thru,removeable,retrn,ro,scrollin,sectionin,seh,siz,sord,sur,te,trough,ue,wth`
Much like the edit-tool and grid-types, clock-modes are UI state.
Saving the UI state separately allows them to be used
consistently for new sessions. Previously clock-modes were set
initially (at application start) and when loading sessions.
The clock modes of newly created sessions was different
depending on loading another session prior to creating the
session. This is now no longer the case.
Window size has to be set before calling `setup_toplevel_window()`.
and `set_show_tabs()` - see also acf13e9498 and 42cb321039.
This also unconditionally saves the current settings to global config
instant.xml. This was previously only done in rare cases when first
closing the session and then quitting Ardour.
Previously this setting was ignored. It is relevant when loading a demo
session, where initially there is no user Config instant.xml.
ARDOUR_UI::setup_windows is called directly after the engine starts, but
before the session is set.
* Fix demo-session glob (missing "*" + session_archive_suffix)
* Copy demo-session also when copying settings from older version
* Also add demo-session to recent-list if it was previously unpacked
for new major versions.
