Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/643>
- Change text to symbols - Remove unused button-definitions This makes these layout-files easier to understand and edit. Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/629>
Part-of: <https://gitlab.gnome.org/World/Phosh/squeekboard/-/merge_requests/611>
Closes: #65