Update git submodules
- Update extensions/Scribunto from branch 'REL1_39' to 5ccdc917f838c2f5cb77bbf0ff2cc749d097412b
- Localisation updates from https://translatewiki.net.
Change-Id: I0469b02c7c85817f9a3e64e788afc65991e4fda2
- Localisation updates from https://translatewiki.net.