Ignore auto-repeat activation of toggle keybindigs

Andrea Azzaronerequested to merge
azzaronea/gnome-shell:fix-issue-373 into master

Use Meta.KeyBindingFlags.IGNORE_AUTOREPEAT for open-application-menu, toggle-message-tray keybindings, toggle-application-view, and toggle-application-view keybindings

Fixes: #373 (closed)

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