Update git submodules
- Update extensions/Renameuser from branch 'REL1_39' to 49cb9272e08cdbfb1f9d174c51089a547f0c7169
- Localisation updates from https://translatewiki.net.
Change-Id: I00028d7700ecdd96f12fe8a3115e84b2cab49132
- Localisation updates from https://translatewiki.net.