Update git submodules
- Update extensions/AbuseFilter from branch 'REL1_40' to a7cb40da2cedf1dadfd9bd29396d861e9970b4dd
- Localisation updates from https://translatewiki.net.
Change-Id: Ie4c60627c447241451ad5db883c538449a2e8cf9
- Localisation updates from https://translatewiki.net.