KSysGuardFormatter - en to es translation catalogue (3 entries)

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

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

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