Update git submodules
- Update extensions/CategoryTree from branch 'REL1_40' to 370dc7fcef3e398cdfd978a031dcfbcbb70de0de
- Localisation updates from https://translatewiki.net.
Change-Id: I539d85243e74815e280dc13be6bb206513b95eb1
- Localisation updates from https://translatewiki.net.