how to change the interface language?
or where to find the interface language packs?

For now Tixati is English only.

This should be evaluated as a change.
Is there a reason for not allowing?
Is it control of the multi-user? If everything is vetted from the tixati internal side, via just importing a string file...
Understandably sanitize the files before including, but is the problem, display uniformity? Some languages simply have larger glyphs