Update git submodules
- Update extensions/TitleBlacklist from branch 'REL1_39' to 542dec80000e4beb1d658d553ec3a393931175a4
- Localisation updates from https://translatewiki.net.
Change-Id: Id6b83c686602cf8f76668c56a9163bbe72dc952b
- Localisation updates from https://translatewiki.net.