l10n: update translation files

gui/i18n/base.ts

gui/i18n/main_ar.ts

gui/i18n/main_de.ts

gui/i18n/main_el.ts

gui/i18n/main_es-cu.ts

gui/i18n/main_es-rAR.ts

gui/i18n/main_es.ts

gui/i18n/main_es_AR.ts

gui/i18n/main_es_ES.ts

gui/i18n/main_et.ts

gui/i18n/main_fa_IR.ts

gui/i18n/main_fi.ts

gui/i18n/main_fr.ts

gui/i18n/main_hu.ts

gui/i18n/main_it.ts

gui/i18n/main_lt.ts

gui/i18n/main_nl.ts

gui/i18n/main_pl.ts

gui/i18n/main_pt-rBR.ts

gui/i18n/main_pt_BR.ts