Update git submodules
- Update BlueSpiceEchoConnector from branch 'master' to 3debabecf9ab5eff6d34d7aa080c2889d3480c94
- Localisation updates from https://translatewiki.net.
Change-Id: I9f108f9296e7120157c22fede9b1b2652022d2f9
- Localisation updates from https://translatewiki.net.