Hi, I'm a Swedish user, I would like to have my system in Swedish.

KDE apps is no problem, except KDE modules in TASMA, see note at the end.
I have the following lines in my ~/.bashrc
LC_ALL=sv_SE.UTF-8
LANG=sv_SE.UTF-8
Thats works ok only for the programs that I start from a shell. Eg
$ easytag
This does work too (if I dont want to edit ~/.bashrc)
$ LC_ALL=sv_SE.UTF-8 easytag
But when I start easytag from the 'K menu', it's in english, unless I edit the K menu item for easytag and prepend LC_ALL=sv_SE.UTF-8 to it.
Is there a solution to this problem, how do I fix it? I want it to be system or user wide.
The translations are there, the only thing I want is to use them.
Note: When launching the KDE modules from within TASMA, they are in english, but when I run eg 'kcmshell language' it's in my sweet swedish style.