The source project of this merge request has been removed.
ev-sidebar-{links,bookmakrs}: Some cleanup and modernization
Main commit/modernization:
ev-sidebar-links: Port GtkMenu to GActions.
This is a first modernization needed to get rid of the GtkMenu, which
was removed in GTK4 in favour of GtkPopoverMenu. GtkPopoverMenu already
exists in GTK3, but it requires actions, so the first step to the
transition is to port the GtkMenu to actions.
The rest are cleanup commits.