Update git submodules
- Update extensions/Interwiki from branch 'REL1_39' to f1a60077e69a21e027bc9344a8e7d43e3ce3b2ab
- Localisation updates from https://translatewiki.net.
Change-Id: I19fe3c5075e9b0886beff3cc03194f710bd2ce72
- Localisation updates from https://translatewiki.net.