Update git submodules
- Update extensions/Echo from branch 'REL1_40' to 96050b505817ff4912f60547d59c94c68054801d
- Localisation updates from https://translatewiki.net.
Change-Id: Ie35d5dcaea35a13d387a4e4b07070b0e4be3c23d
- Localisation updates from https://translatewiki.net.