Ok, got it working. A few things after a quick test with the finnish translation:

- the .qm file should be tr_fi.qm, not ts_fi.qm as in your post.
- in the battery condition, the 'not used'-string is not translated.
- the header in calendar condition summary field is a little short.
- toggle NFC has to be pressed twice for the description to change.
- cell location condition 'Help'-string is not translated.
- the string (%1 timeout) in cell id and WLAN time-out would IMO be better as (%1s timeout) (seconds).
- the header in the popup for Set Bluetooth mode is not translated.
- Default snooze in alarm snooze setting is not translated.

Maybe the biggest thing:

- DefaultRule is not translated and I think it should be because it is referred to in other translations.