Update git submodules
- Update extensions/Interwiki from branch 'REL1_39' to c5fb95922e2db3b8548faf66fe941add41a96d8a
- Localisation updates from https://translatewiki.net.
Change-Id: I719fb96544c3fc42851e76de22fc2033c70a8801
- Localisation updates from https://translatewiki.net.