Updated Scottish Gaelic translation
docs: use markdown instead of <note>
docs: don't use <warning>
docs: don't use <important>
popover: Add padding pointers to GtkPopoverClass
popover: Add ::closed signal

This signal is emitted when the popover is dismissed either through
API or user interaction, somewhat more friendly than connecting to
::unmap.
docs: Don't use warnings
popover: Emit ::closed once modality is cleared

Otherwise, calling gtk_widget_grab_focus() on a widget when the
popover send ::closed won't work.
docs: fix quotes in example
gtkwindow: remove delete-event idle function on finalize

Heavy duty can prevent this idle function from being called before
the window is destroyed, so make sure that the source is removed
when the window is finalized.

https://bugzilla.gnome.org/show_bug.cgi?id=723771
GtkTreeViewColumn: fix critical warning

Do not call _column_autosize() if there is no treeview set yet.

https://bugzilla.gnome.org/show_bug.cgi?id=723637
GtkApplication: install gtk option group

Install Gtk's GOptionGroup in GApplication just before commandline
arguments are parsed.
Updated Slovenian translation
gdkwindow-wayland: Make function order match listener order
Revert "Fix memory leak in GtkTreeViewAccessible"

This reverts commit 7a411eb6dd4dd0dedf28f3b5414561e765886369.
This also makes gedit external tools manager to crash
Bump glib dep
Updated Galician translations
Wayland: Set gtk-dialogs-use-header

Since we don't have a setting for this, hardcode the value
for now.
gtkmagnifier: do not use P_() macro for property names
Tajik translation updated