Update git submodules
- Update extensions/ConfirmEdit from branch 'REL1_39' to ed8052d39c2fd6977dd1c453895b0954e84b512b
- Localisation updates from https://translatewiki.net.
Change-Id: Icffdb8681c8fd7df8d203bb2b16431e849ffe2aa
- Localisation updates from https://translatewiki.net.