Update git submodules
- Update extensions/TemplateData from branch 'REL1_39' to c8adde1ff34b20ecb6628b9bb48938ee3b834979
- Localisation updates from https://translatewiki.net.
Change-Id: If1057da95f76324622bf6905e41676d04031e8e2
- Localisation updates from https://translatewiki.net.