Update git submodules
- Update extensions/ConfirmEdit from branch 'REL1_39' to 163c5eee64b5b2fa007aef1954b6ca14cc2dbe67
- Localisation updates from https://translatewiki.net.
Change-Id: Ic1feb9f79c051aeadb4ac2e6575a9a3034d7fcc8
- Localisation updates from https://translatewiki.net.