Update git submodules
- Update extensions/ConfirmEdit from branch 'REL1_39' to 3c56ea96d3d1d3f691ed48dc14fcc6fc3855e119
- Localisation updates from https://translatewiki.net.
Change-Id: I737095587740a96fbb3d9dd098fa7d93252a9187
- Localisation updates from https://translatewiki.net.