Update git submodules
- Update extensions/Scribunto from branch 'REL1_39' to 1f5bfea5bfdce6cd84ae286525da5f6d79c3a4b8
- Localisation updates from https://translatewiki.net.
Change-Id: I9334b4153103656db4c4a84c330f7350cbfdd6d5
- Localisation updates from https://translatewiki.net.