kmail - en to cy translation catalogue (4 entries)

en: No appropriate crypto plug-in was found.
cy: Ni chanfuwyd rhaglennig celu addas.

[ctx: %1 is either 'OpenPGP' or 'S/MIME']
en: No %1 plug-in was found.
cy: Ni chanfuwyd rhaglennig %1.

en: Crypto plug-in "%1" could not decrypt the data.
cy: Methodd y rhaglennig celu "%1" ddatgelu'r data.

en: Error: %1
cy: Gwall: %1
