Update git submodules
- Update extensions/Nuke from branch 'REL1_39' to cafc47c783a9c07bed0a7d5bb2ae5cd519471a4b
- Localisation updates from https://translatewiki.net.
Change-Id: Ibccb00fc6e5d197d5e3181d1b19207ce286931d7
- Localisation updates from https://translatewiki.net.