Update git submodules
- Update extensions/ConfirmEdit from branch 'REL1_39' to 5388f80ea2285fa249b8adc5784528b28147d2c2
- Localisation updates from https://translatewiki.net.
Change-Id: I1e1aa26f9d9aa30028f4daad33e3e23f361aabd9
- Localisation updates from https://translatewiki.net.