Finnish language support

[NotUnderi]

First time contributing to a project so please be patient with me

Creating this issue as instructed over here.

I'll start translating.

[connortechnology]

Great! Thank you so much! Please be aware that I am lazy and thus when adding a new button or word to be translated I generally don't bother to add a line in en_gb.php. So you may have to add lines to your translation.

[connortechnology]

Wait, sorry this is zmNinja. I don't know anything about how translations work in zmNinja. But I'm here to help if you need any!

[NotUnderi]

Already facing interesting problems. There are lines such as "from" that don't work in Finnish. We use suffixes to indicate preposition, so "from zmninja" would be "zmninjasta" and putting "sta" as the translation just wouldn't work. I'll ignore these for now.