Update finnish translation for 0.4.0
There are a few strings that was missing from the file you translated, and I've also added display of the name of the translator(s) in the about dialog (sourced from the TRANSLATED_BY string). The fi.arb in master is updated with the latest strings: https://gitlab.com/zerodogg/org.zerodogg.migraineLog/-/blob/master/i18n/fi.arb
The following strings are the ones that are missing translations:
i18n/fi.arb: Filter:
i18n/fi.arb: show
i18n/fi.arb: everything
i18n/fi.arb: months
i18n/fi.arb: Translated by
i18n/fi.arb: TRANSLATED_BY