Update git submodules
- Update extensions/Cite from branch 'REL1_39' to ca294fa4fb81c49e8276270181f787b6634b5691
- Localisation updates from https://translatewiki.net.
Change-Id: I40375bbae50e38f19f07fa5d07ad6bf41e5bfb3b
- Localisation updates from https://translatewiki.net.