Update git submodules
- Update skins/MinervaNeue from branch 'REL1_39' to 9aeb16a0163a6041902d731c8c1a92a9460a6369
- Localisation updates from https://translatewiki.net.
Change-Id: I8008d1f228d1a1614bafb2efbc66f0a414628edc
- Localisation updates from https://translatewiki.net.