Update git submodules
- Update skins/Vector from branch 'REL1_40' to 76793776fa7d7150196c75ada56f8cd56c8ab042
- Localisation updates from https://translatewiki.net.
Change-Id: I87d366ebb6b9d3bdf8c00f54e967d62e6fa02696
- Localisation updates from https://translatewiki.net.