Updated bg_BG translation

- added translation for new planner warning strings
- fixed a small typo in the tranlation for the word "maintain"
- translated (mbar) text in parentheses

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
New terms translated to Finnish

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Update for Russian translation.

New strings translated, several spelling fixes, event strings
shortened.

Signed-off-by: Sergey Starosek <sergey.starosek@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Update for Swedish translation

New strings translated and some updated for Swedish.

Signed-off-by: Fredrik Steen <fredrik@ppo2.se>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>