Most peripherals settings have been moved to
gsettings-desktop-schemas.
There are some semantic differences:
* pointer and touchpad speed is now a single value in the [-1..1]
range (from "unaccelerated" to "fast"). A value of 0 is the default;
* touchpad enabled is now an enum which can be enabled, disabled or
disabled-on-external-mouse. This patch keeps the same UI so the last
value is the same as disabled in the UI and can't be set for now;
* disable while typing is now always enabled so the checkbox has been
removed;
* horizontal scrolling is always enabled when two finger scroll is
disabled. It wasn't in the UI but we no longer need to set it since
it doesn't exist anymore.
https://bugzilla.gnome.org/show_bug.cgi?id=743194
f5eb204741
