Update git submodules
- Update extensions/WikiEditor from branch 'REL1_40' to 35cfe1283d3b6e6a3dc2e6849fb07963328c70a7
- Localisation updates from https://translatewiki.net.
Change-Id: I394e5991eef34f6dccfb2ae3f740984c842f33ee
- Localisation updates from https://translatewiki.net.