Update git submodules
- Update BlueSpiceBookshelf from branch 'master' to 2a01fae053a111e38539e3692fd6849629c82038
- Localisation updates from https://translatewiki.net.
Change-Id: I001e847e06dd5524ea71dd3f5cd57074e84e70c6
- Localisation updates from https://translatewiki.net.