Update git submodules
- Update extensions/SpamBlacklist from branch 'REL1_39' to dbbde4704871e0800c762c1bd71e2681a8c3611a
- Localisation updates from https://translatewiki.net.
Change-Id: If72e6c50179f1c6f8bd867d5eea98d9ec25cfc6b
- Localisation updates from https://translatewiki.net.