KSysGuardFormatter - en to es translation catalogue (2 entries)

[ctx: Percent unit]
note: i18n: Use \u200B (zero width space) to separate value and unit
en: %1​%
es: %1 %

[ctx: Seconds unit symbol]
note: i18n: Use \u200B (zero width space) to separate value and unit
en: %1​s
es: %1 s
