Use ShortcutsWindow

This is new type of Window available in GTK+. I think it will be better than our handmade window.

assigned to @ced

added tryton type::feature + 1 deleted label

added 1 deleted label and removed 1 deleted label

review58511002 updated at https://codereview.tryton.org/58511002/#ps1

New changeset 4f13475b5cb8 by Cédric Krier in branch 'default':
Use ShortcutsWindow
https://hg.tryton.org/tryton/rev/4f13475b5cb8

added 1 deleted label and removed 1 deleted label

closed

New changeset 4c8e6de5580e by Cédric Krier in branch 'default':
Use ShortcutsWindow
https://hg.tryton.org/tryton-env/rev/4c8e6de5580e