Update git submodules
- Update extensions/OATHAuth from branch 'REL1_39' to bd7513cc8c565e2588413aca0f529f5346e23304
- Localisation updates from https://translatewiki.net.
Change-Id: I6fc8db508781b8624146fee74a7b4b4021cde1e7
- Localisation updates from https://translatewiki.net.