Update git submodules
- Update extensions/Thanks from branch 'REL1_40' to 105ba2cf644ff8feb1bc00237082eacf75d13899
- Localisation updates from https://translatewiki.net.
Change-Id: Ie2a19327529209d6b4aee9880f602b066a6fa5b5
- Localisation updates from https://translatewiki.net.