Question about language and location format in Jenkins .propeties files

[govan.m]

Hi all!

I have an issue with translating and wonder if somebody have a good advice.
My computer locale (and my browser Mozilla, which I have checked with quick locale)  is Swedish but when I am building Jenkins everything is English.

I noticed that the problem is that Jenkins .properties files with Swedish translations are using both locale and location with this format _sv_SE.properties.
My company is Norwegian and I am getting an IP address in Norway. I guess because of this Swedish translations are not working for me. I tested to add a a properties-file with only locale and removing location  (_sv.properties)  and then translation is working.

Portugues  language has the same situation: some times we have both _pt_BR.properties and _pt_PT.properties but in some cases we have _pt_BR.properties and _pt.properties

So I wonder how Jenkins should have it in cases like this that a user has a locale but using a location different than people with that language are living in.
Swedish is being used in Finland as well (limited) and we have sv_FI.properties option as well. Shall Jenkins have 3 different files in this case for each properties files: T.ex:
Messages_sv.properties
Messages_sv_SE.properties
Messages_sv_FI.properties

Or shall we rename all Messages_sv_SE.properties to Messages_sv.properties instead and then if somebody in Finland want to change the language for a message then he can add sv_FI.
Any thoughts?

Kind regards
//Govan