Don't use stock ids for the security state of a page

Use an enum instead.

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Remove help button from the encoding dialog

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Don't use stock items and deprecated widgets in encoding dialog

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Remove help button from prefs dialog

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Don't use stock and deprecated widgets in prefs dialog

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Don't use stock items and deprecated widgets in lang prefs dialog

https://bugzilla.gnome.org/show_bug.cgi?id=721285
Remove use of stock items in floating status bar

By syncing widget from nautilus

https://bugzilla.gnome.org/show_bug.cgi?id=721285