Update spell checker dictionaries

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Support spell checker for sr@laatin

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Localize language pack

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Allow dictionaries to be placed in %APPDATA%\TortoiseGit\dic

Not all people have administrator privileges or want to put their own files into "c:\Program Files".

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Update sample snippet.txt

Signed-off-by: Sup Yut Sum <ch3cooli@gmail.com>
Sync translations with Transifex

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Prepare release and bump version numbers to 1.8.12.0

Signed-off-by: Sven Strickroth <email@cs-ware.de>