Synced with Transifex

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

Signed-off-by: Sven Strickroth <email@cs-ware.de>
Prepared release and bumped version numbers to 1.8.7.0

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