Update git submodules
- Update BlueSpicePageTemplates from branch 'master' to 9a4af61b77a162123035d818e9b4748fa07a10c4
- Localisation updates from https://translatewiki.net.
Change-Id: I1bb7ba6b3b6b02943d960fdba12ae3340334db9b
- Localisation updates from https://translatewiki.net.