Update git submodules
- Update BlueSpiceFlaggedRevsConnector from branch 'master' to 13996f886f1f52bc0c93853295d8ac64f7335630
- Localisation updates from https://translatewiki.net.
Change-Id: I0b2ac3bcab66b8558a7eafd9afb5b02ef1b6c547
- Localisation updates from https://translatewiki.net.