Update git submodules
- Update extensions/Cite from branch 'REL1_42' to c6e8021eeab2c680c30996cc8d511cb165b72384
- Localisation updates from https://translatewiki.net.
Change-Id: I627c30b205fd54c01d8998202a8918f6fc893818
- Localisation updates from https://translatewiki.net.