Update git submodules
- Update extensions/TitleBlacklist from branch 'REL1_39' to 1b7f1547e4b88b58fc51c6c3df79388d79af0cc3
- Localisation updates from https://translatewiki.net.
Change-Id: I3c59d1a28696de5d003f02be12749d29ec998aed
- Localisation updates from https://translatewiki.net.