Merge pull request #231 from virtualtam/master

Updated French translation
Handle article decoding errors for Aard dictionaries
Fixed #232: history pane doesn't retain cleared state after restarting goldendict
Add Lojban language code (issue #233)
Update Brazilian Portuguese translation by MCHAL, closes #234.
Updated Greek translation by jennie.
Window activation under Linux again (issue #235)
Update belarusian translation
Merge pull request #236 from quendimax/master

Update belarusian translation
Fixed #237: Proper dictionary title (DICT format)
Better Dictd dictionary name detection (Issue #237).
Set the minimum zoom level from 0.7 to 0.1
Handle dictzip errors without program termination (Fix issue #207)
Fixed #239: Couldn't play sounds via some external programs on Windows
Korean localization by panho10
Lupdate all translations
Update Russian translation
Updated Korean translation by Panho Ku
Tajik Language Updates

New strings translated and some previous translations updated/improved
for Tajik language
Merge pull request #240 from Ibragimov/master

Tajik Language Updates