Pontoon: Update Welsh (cy) localization of Firefox
Co-authored-by: Rhoslyn Prys <rprys@posteo.net>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
- file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<!ENTITY editfield0.label "Enw Defnyddiwr:">
<!ENTITY editfield1.label "Cyfrinair:">
<!ENTITY copyCmd.label "Copïo">
<!ENTITY copyCmd.accesskey "C">
<!ENTITY selectAllCmd.label "Dewis Popeth">
<!ENTITY selectAllCmd.accesskey "P">