Add missing introspection annotations

https://bugzilla.gnome.org/show_bug.cgi?id=707519
Make logos in GtkAboutDialog bigger

When available, choose a size of up to 128 in GtkAboutDialog.
A 48x48 icon just looks too small in there.
a11y: not using default name for switch

A proper name or label is required. In the same way, if the
widget is labelled, ATs uses to expose both the label and the
name, making the final output not really user-friendly.

https://bugzilla.gnome.org/show_bug.cgi?id=707872
Updated Czech translation
Finnish translation update
Finnish translation update
Updated Thai translation.
l10n: Update Japanese translation
Updated Thai translation.
wayland: Fix make dist

In addition to d34335e51c98efebe010bd4a202fe2a4b2fb7d06